diff --git a/validation-test/compiler_crashers/27821-swift-typechecker-definedefaultconstructor.swift b/validation-test/compiler_crashers/27821-swift-typechecker-definedefaultconstructor.swift
new file mode 100644
index 0000000000000..e214964969f30
--- /dev/null
+++ b/validation-test/compiler_crashers/27821-swift-typechecker-definedefaultconstructor.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{class A{struct Q{struct d{struct c{struct Q{struct Q{{}}}}}}}}class S<T{func a<h{func b<T where h.g=a{
diff --git a/validation-test/compiler_crashers/27822-swift-modulefile-loadextensions.swift b/validation-test/compiler_crashers/27822-swift-modulefile-loadextensions.swift
new file mode 100644
index 0000000000000..888d7cde27d6b
--- /dev/null
+++ b/validation-test/compiler_crashers/27822-swift-modulefile-loadextensions.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let P{if{{}class d{enum a}}}class S<T{func a<h{func b<T where h.g=a{
diff --git a/validation-test/compiler_crashers/27823-swift-parser-parsetoken.swift b/validation-test/compiler_crashers/27823-swift-parser-parsetoken.swift
new file mode 100644
index 0000000000000..4933024fc323b
--- /dev/null
+++ b/validation-test/compiler_crashers/27823-swift-parser-parsetoken.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{struct S{protocol a{func a<f:f.l}}
diff --git a/validation-test/compiler_crashers/27824-swift-modulefile-maybereadgenericparams.swift b/validation-test/compiler_crashers/27824-swift-modulefile-maybereadgenericparams.swift
new file mode 100644
index 0000000000000..6be5dca07cc0f
--- /dev/null
+++ b/validation-test/compiler_crashers/27824-swift-modulefile-maybereadgenericparams.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+extension String{{}func c{class a{struct h{let a:d struct d<f:f.c
diff --git a/validation-test/compiler_crashers/27825-swift-functiontype-get.swift b/validation-test/compiler_crashers/27825-swift-functiontype-get.swift
new file mode 100644
index 0000000000000..dd48a5e726729
--- /dev/null
+++ b/validation-test/compiler_crashers/27825-swift-functiontype-get.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var b{
+let a{
+struct d<T where H:A
+{struct c<I{
+var _=B
+struct B
+struct B
+}
+}}enum a{
+struct Q{enum A{
+struct S:BooleanType d
diff --git a/validation-test/compiler_crashers/27826-swift-lexer-lexstringliteral.swift b/validation-test/compiler_crashers/27826-swift-lexer-lexstringliteral.swift
new file mode 100644
index 0000000000000..8d01112cac2d3
--- /dev/null
+++ b/validation-test/compiler_crashers/27826-swift-lexer-lexstringliteral.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B{struct X<T:T.a}{class({{{{{{{{{([{{{{{{{{{{{{{{{a"
diff --git a/validation-test/compiler_crashers/27827-swift-constraints-simplifylocator.swift b/validation-test/compiler_crashers/27827-swift-constraints-simplifylocator.swift
new file mode 100644
index 0000000000000..72f654b74a4b5
--- /dev/null
+++ b/validation-test/compiler_crashers/27827-swift-constraints-simplifylocator.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var:{{let
+v{class B<f:d
+struct d<f:f.c}}{
diff --git a/validation-test/compiler_crashers/27828-swift-conformancelookuptable-getallprotocols.swift b/validation-test/compiler_crashers/27828-swift-conformancelookuptable-getallprotocols.swift
new file mode 100644
index 0000000000000..edc50c92bab6b
--- /dev/null
+++ b/validation-test/compiler_crashers/27828-swift-conformancelookuptable-getallprotocols.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{{struct Q<T where g:T{class A{class B:A{func a
diff --git a/validation-test/compiler_crashers/27829-swift-typechecker-lookupmembertype.swift b/validation-test/compiler_crashers/27829-swift-typechecker-lookupmembertype.swift
new file mode 100644
index 0000000000000..74422078cd827
--- /dev/null
+++ b/validation-test/compiler_crashers/27829-swift-typechecker-lookupmembertype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum B<T where h:b{var f=[]class A{let a=A}struct A
diff --git a/validation-test/compiler_crashers/27830-swift-constraints-constraintsystem-simplifytype.swift b/validation-test/compiler_crashers/27830-swift-constraints-constraintsystem-simplifytype.swift
new file mode 100644
index 0000000000000..03b9dfca62a1d
--- /dev/null
+++ b/validation-test/compiler_crashers/27830-swift-constraints-constraintsystem-simplifytype.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{}class C<T where g:b{enum S<D{
+struct A{{}}struct A
+let b=A
diff --git a/validation-test/compiler_crashers/27831-swift-bracestmt-create.swift b/validation-test/compiler_crashers/27831-swift-bracestmt-create.swift
new file mode 100644
index 0000000000000..89d4fb6467836
--- /dev/null
+++ b/validation-test/compiler_crashers/27831-swift-bracestmt-create.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+for b:{if{}}{{class S<T{func a<h{func b<T where h.g=a{
diff --git a/validation-test/compiler_crashers/27832-swift-typechecker-resolvetypeincontext.swift b/validation-test/compiler_crashers/27832-swift-typechecker-resolvetypeincontext.swift
new file mode 100644
index 0000000000000..59a4c6187c458
--- /dev/null
+++ b/validation-test/compiler_crashers/27832-swift-typechecker-resolvetypeincontext.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum A
+protocol A{
+typealias f:a
+func a<T where f:d
diff --git a/validation-test/compiler_crashers/27833-swift-conformancelookuptable-lookupconformances.swift b/validation-test/compiler_crashers/27833-swift-conformancelookuptable-lookupconformances.swift
new file mode 100644
index 0000000000000..6a39ff6736dd2
--- /dev/null
+++ b/validation-test/compiler_crashers/27833-swift-conformancelookuptable-lookupconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct Q<T where h:A{class b<a{class b<func b{{t{{}}struct b}func x{let a=b}if{{struct c{}struct S{class b{struct B
diff --git a/validation-test/compiler_crashers/27834-swift-constraints-constraintgraphscope-constraintgraphscope.swift b/validation-test/compiler_crashers/27834-swift-constraints-constraintgraphscope-constraintgraphscope.swift
new file mode 100644
index 0000000000000..67700b1be759b
--- /dev/null
+++ b/validation-test/compiler_crashers/27834-swift-constraints-constraintgraphscope-constraintgraphscope.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T where h=a{class d<T{var _{{{class B:d
diff --git a/validation-test/compiler_crashers/27835-llvm-tinyptrvector-swift-valuedecl-push-back.swift b/validation-test/compiler_crashers/27835-llvm-tinyptrvector-swift-valuedecl-push-back.swift
new file mode 100644
index 0000000000000..a66433f8e4e1d
--- /dev/null
+++ b/validation-test/compiler_crashers/27835-llvm-tinyptrvector-swift-valuedecl-push-back.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+init}{var:t
+class d<f:f.c}init
diff --git a/validation-test/compiler_crashers/27836-llvm-foldingset-swift-constraints-constraintlocator-nodeequals.swift b/validation-test/compiler_crashers/27836-llvm-foldingset-swift-constraints-constraintlocator-nodeequals.swift
new file mode 100644
index 0000000000000..d0f67785aea34
--- /dev/null
+++ b/validation-test/compiler_crashers/27836-llvm-foldingset-swift-constraints-constraintlocator-nodeequals.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B<T where h:A{var _=true{}struct A{let r=A}struct A
diff --git a/validation-test/compiler_crashers/27837-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/27837-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..38c9e6867ab12
--- /dev/null
+++ b/validation-test/compiler_crashers/27837-swift-inflightdiagnostic.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var A{{enum A<T where g:C{
+class a{class b
+{
+class b:a{
+class a
+let a{
+e
diff --git a/validation-test/compiler_crashers/27838-swift-conformancelookuptable-updatelookuptable.swift b/validation-test/compiler_crashers/27838-swift-conformancelookuptable-updatelookuptable.swift
new file mode 100644
index 0000000000000..669067d14ac2f
--- /dev/null
+++ b/validation-test/compiler_crashers/27838-swift-conformancelookuptable-updatelookuptable.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B<A{protocol A{func g:B}}func f<f:f.B
diff --git a/validation-test/compiler_crashers/27839-swift-archetypebuilder-potentialarchetype-addconformance.swift b/validation-test/compiler_crashers/27839-swift-archetypebuilder-potentialarchetype-addconformance.swift
new file mode 100644
index 0000000000000..1d0ed48651f0a
--- /dev/null
+++ b/validation-test/compiler_crashers/27839-swift-archetypebuilder-potentialarchetype-addconformance.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{enum B{class B{struct d{struct Q{let a{struct S<f:f.c}protocol C
diff --git a/validation-test/compiler_crashers/27841-swift-parser-createbindingfrompattern.swift b/validation-test/compiler_crashers/27841-swift-parser-createbindingfrompattern.swift
new file mode 100644
index 0000000000000..d41ef521a1c43
--- /dev/null
+++ b/validation-test/compiler_crashers/27841-swift-parser-createbindingfrompattern.swift
@@ -0,0 +1,21 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import d
+}{struct d{{
+}
+struct S{
+class d<T where a=b{
+class d{
+func b
+let a{
+{
+class d{class d{{{{}
+{
+}{}}}class A{
+var f=b
+struct S{
+var a
diff --git a/validation-test/compiler_crashers/27842-swift-conformancelookuptable-addprotocol.swift b/validation-test/compiler_crashers/27842-swift-conformancelookuptable-addprotocol.swift
new file mode 100644
index 0000000000000..a1db70d58388a
--- /dev/null
+++ b/validation-test/compiler_crashers/27842-swift-conformancelookuptable-addprotocol.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct Q{protocol a{class T func f:T{}}}class A{class A{func g<f:f.c
diff --git a/validation-test/compiler_crashers/27843-llvm-foldingset-swift-classtype-nodeequals.swift b/validation-test/compiler_crashers/27843-llvm-foldingset-swift-classtype-nodeequals.swift
new file mode 100644
index 0000000000000..73b9cf1f55925
--- /dev/null
+++ b/validation-test/compiler_crashers/27843-llvm-foldingset-swift-classtype-nodeequals.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T{let:{class b.protocol P{func f func f:T.C
diff --git a/validation-test/compiler_crashers/27844-swift-typechecker-getinterfacetypefrominternaltype.swift b/validation-test/compiler_crashers/27844-swift-typechecker-getinterfacetypefrominternaltype.swift
new file mode 100644
index 0000000000000..1faffa3485a6d
--- /dev/null
+++ b/validation-test/compiler_crashers/27844-swift-typechecker-getinterfacetypefrominternaltype.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class a{
+typealias f=c
+protocol c
+class B<T:T.E
diff --git a/validation-test/compiler_crashers/27845-swift-typebase-isequal.swift b/validation-test/compiler_crashers/27845-swift-typebase-isequal.swift
new file mode 100644
index 0000000000000..f17633c131670
--- /dev/null
+++ b/validation-test/compiler_crashers/27845-swift-typebase-isequal.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{{{}{}}struct b{{}struct S{enum a{{}{{{{}}}}class S<T{func a<h{func b<T where h.g=a{}}{{{{}}}}}}class S<T{{{}}class d
diff --git a/validation-test/compiler_crashers/27846-llvm-smallvectorimpl-swift-protocolconformance-operator.swift b/validation-test/compiler_crashers/27846-llvm-smallvectorimpl-swift-protocolconformance-operator.swift
new file mode 100644
index 0000000000000..332921d556662
--- /dev/null
+++ b/validation-test/compiler_crashers/27846-llvm-smallvectorimpl-swift-protocolconformance-operator.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{
+class a
+class b{
+enum b{
+struct e
+{{{
+{{{{
+}}}}}}class S<T{func a<h{func b<T where h.g=a{}}class d
diff --git a/validation-test/compiler_crashers/27848-swift-tupletype-get.swift b/validation-test/compiler_crashers/27848-swift-tupletype-get.swift
new file mode 100644
index 0000000000000..8aa767e4e2c2f
--- /dev/null
+++ b/validation-test/compiler_crashers/27848-swift-tupletype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B{struct a}struct B<T:T.a
diff --git a/validation-test/compiler_crashers/27849-swift-constraints-constraintsystem-gettypeofmemberreference.swift b/validation-test/compiler_crashers/27849-swift-constraints-constraintsystem-gettypeofmemberreference.swift
new file mode 100644
index 0000000000000..5b8a2d7913a18
--- /dev/null
+++ b/validation-test/compiler_crashers/27849-swift-constraints-constraintsystem-gettypeofmemberreference.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct a{class B:var f=B{}}enum b{struct S{struct c<T where h:a{struct S<A{struct Q{struct c,let a=c
diff --git a/validation-test/compiler_crashers/27851-swift-structtype-get.swift b/validation-test/compiler_crashers/27851-swift-structtype-get.swift
new file mode 100644
index 0000000000000..36dbdc5c6aa6d
--- /dev/null
+++ b/validation-test/compiler_crashers/27851-swift-structtype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{enum B{struct b}struct A{struct b<f:f.a
diff --git a/validation-test/compiler_crashers/27852-swift-valuedecl-getoverloadsignature.swift b/validation-test/compiler_crashers/27852-swift-valuedecl-getoverloadsignature.swift
new file mode 100644
index 0000000000000..673ed0641def4
--- /dev/null
+++ b/validation-test/compiler_crashers/27852-swift-valuedecl-getoverloadsignature.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+<c}struct B<T where h:a{struct d{struct c<b{var b={class a}let f=c{
diff --git a/validation-test/compiler_crashers/27853-swift-constraints-constraintsystem-addconstraint.swift b/validation-test/compiler_crashers/27853-swift-constraints-constraintsystem-addconstraint.swift
new file mode 100644
index 0000000000000..72f88984db9b0
--- /dev/null
+++ b/validation-test/compiler_crashers/27853-swift-constraints-constraintsystem-addconstraint.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T{
+let f{
+struct Q{
+let f=B<T
+struct B{
+class B<T where h:a{
+enum B<T
+struct B var f=B
+class B T
diff --git a/validation-test/compiler_crashers/27854-swift-clangimporter-loadextensions.swift b/validation-test/compiler_crashers/27854-swift-clangimporter-loadextensions.swift
new file mode 100644
index 0000000000000..1b907b2de56c1
--- /dev/null
+++ b/validation-test/compiler_crashers/27854-swift-clangimporter-loadextensions.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<func b{enum b{class B{}}}class S<T{func a<h{func b<T where h.g=p
diff --git a/validation-test/compiler_crashers/27855-swift-nominaltype-get.swift b/validation-test/compiler_crashers/27855-swift-nominaltype-get.swift
new file mode 100644
index 0000000000000..7173135ca87ac
--- /dev/null
+++ b/validation-test/compiler_crashers/27855-swift-nominaltype-get.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct Q<T{init{}class B:a
+class a{
+func a<f:f.s
diff --git a/validation-test/compiler_crashers/27856-swift-constraints-constraintlocator-profile.swift b/validation-test/compiler_crashers/27856-swift-constraints-constraintlocator-profile.swift
new file mode 100644
index 0000000000000..217085f01026e
--- /dev/null
+++ b/validation-test/compiler_crashers/27856-swift-constraints-constraintlocator-profile.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{{{}}class A{enum b{enum B{func a<f:f.c
diff --git a/validation-test/compiler_crashers/27857-vtable.swift b/validation-test/compiler_crashers/27857-vtable.swift
new file mode 100644
index 0000000000000..9e3ac80336047
--- /dev/null
+++ b/validation-test/compiler_crashers/27857-vtable.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{let f=class A{class B{{}class d<f:f.c
diff --git a/validation-test/compiler_crashers/27858-swift-inouttype-get.swift b/validation-test/compiler_crashers/27858-swift-inouttype-get.swift
new file mode 100644
index 0000000000000..28b1da6a16dae
--- /dev/null
+++ b/validation-test/compiler_crashers/27858-swift-inouttype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{enum b{struct Q<S let a{func f<f:f.c
diff --git a/validation-test/compiler_crashers/27859-swift-constraints-constraintsystem-simplifyconformstoconstraint.swift b/validation-test/compiler_crashers/27859-swift-constraints-constraintsystem-simplifyconformstoconstraint.swift
new file mode 100644
index 0000000000000..a694533733a98
--- /dev/null
+++ b/validation-test/compiler_crashers/27859-swift-constraints-constraintsystem-simplifyconformstoconstraint.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{enum b
+struct S<T where h:d{
+let:Int=b<T
+struct Q{struct A{let s=A{
diff --git a/validation-test/compiler_crashers/27861-swift-tuplepattern-createsimple.swift b/validation-test/compiler_crashers/27861-swift-tuplepattern-createsimple.swift
new file mode 100644
index 0000000000000..4a93e675cc639
--- /dev/null
+++ b/validation-test/compiler_crashers/27861-swift-tuplepattern-createsimple.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d<T where H:P{class d<H{
+class a{
+}let
+let a{s
+a
diff --git a/validation-test/compiler_crashers/27862-swift-type-walk.swift b/validation-test/compiler_crashers/27862-swift-type-walk.swift
new file mode 100644
index 0000000000000..778cf8b7bb81d
--- /dev/null
+++ b/validation-test/compiler_crashers/27862-swift-type-walk.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func g{
+{
+}
+class a a{
+struct d<T where I:A{class d{
+let t:a{
+}}}if{
+class
+b
diff --git a/validation-test/compiler_crashers/27863-swift-serializedmoduleloader-loadextensions.swift b/validation-test/compiler_crashers/27863-swift-serializedmoduleloader-loadextensions.swift
new file mode 100644
index 0000000000000..2b376722fc4e3
--- /dev/null
+++ b/validation-test/compiler_crashers/27863-swift-serializedmoduleloader-loadextensions.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{class a{class T{let i{struct c<f:f.c{}}enum A{enum b
diff --git a/validation-test/compiler_crashers/27865-swift-conformancelookuptable-getimplicitprotocols.swift b/validation-test/compiler_crashers/27865-swift-conformancelookuptable-getimplicitprotocols.swift
new file mode 100644
index 0000000000000..ca895b551df0b
--- /dev/null
+++ b/validation-test/compiler_crashers/27865-swift-conformancelookuptable-getimplicitprotocols.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func c{{}protocol a{protocol a{{{{}}}}typealias e:a}struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27866-swift-typebase-getoptionalobjecttype.swift b/validation-test/compiler_crashers/27866-swift-typebase-getoptionalobjecttype.swift
new file mode 100644
index 0000000000000..7ecdb92190ec5
--- /dev/null
+++ b/validation-test/compiler_crashers/27866-swift-typebase-getoptionalobjecttype.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{let a=0.g
+struct Q{
+class A{
+struct B<T where j:T{class A<S{
+struct a{struct B{
+let e=B
diff --git a/validation-test/compiler_crashers/27867-swift-typerepr-getsourcerange.swift b/validation-test/compiler_crashers/27867-swift-typerepr-getsourcerange.swift
new file mode 100644
index 0000000000000..06e7227289faf
--- /dev/null
+++ b/validation-test/compiler_crashers/27867-swift-typerepr-getsourcerange.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func c{_==
+a ){struct B{
+b)class A{
+class
+g.init(){{ enum B{
+a
+class B<f:f.a
diff --git a/validation-test/compiler_crashers/27868-swift-typechecker-getdefaulttype.swift b/validation-test/compiler_crashers/27868-swift-typechecker-getdefaulttype.swift
new file mode 100644
index 0000000000000..a763a727297a7
--- /dev/null
+++ b/validation-test/compiler_crashers/27868-swift-typechecker-getdefaulttype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B{var _=0.b}struct B<T where g:B{struct B{{}func c{let h=c{
diff --git a/validation-test/compiler_crashers/27869-swift-nominaltypedecl-computeinterfacetype.swift b/validation-test/compiler_crashers/27869-swift-nominaltypedecl-computeinterfacetype.swift
new file mode 100644
index 0000000000000..495ce178d8fb2
--- /dev/null
+++ b/validation-test/compiler_crashers/27869-swift-nominaltypedecl-computeinterfacetype.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+if{class T
+struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27870-swift-constraints-constraintsystem-optimizeconstraints.swift b/validation-test/compiler_crashers/27870-swift-constraints-constraintsystem-optimizeconstraints.swift
new file mode 100644
index 0000000000000..f9f9435c3c2d1
--- /dev/null
+++ b/validation-test/compiler_crashers/27870-swift-constraints-constraintsystem-optimizeconstraints.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{_{var c{class B{struct d{struct Q{func a<f:f.c
diff --git a/validation-test/compiler_crashers/27871-swift-typechecker-typecheckpatternbinding.swift b/validation-test/compiler_crashers/27871-swift-typechecker-typecheckpatternbinding.swift
new file mode 100644
index 0000000000000..1d4db89f100d1
--- /dev/null
+++ b/validation-test/compiler_crashers/27871-swift-typechecker-typecheckpatternbinding.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let c{{enum B<T where H:A{enum A{class b{func x{func a{x}}class b{class b{let a=
diff --git a/validation-test/compiler_crashers/27872-swift-metatypetype-get.swift b/validation-test/compiler_crashers/27872-swift-metatypetype-get.swift
new file mode 100644
index 0000000000000..149ae06724caf
--- /dev/null
+++ b/validation-test/compiler_crashers/27872-swift-metatypetype-get.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum A{
+let:f
+func f
+protocol A{
+func g<f:f.a
diff --git a/validation-test/compiler_crashers/27873-void.swift b/validation-test/compiler_crashers/27873-void.swift
new file mode 100644
index 0000000000000..9547fb8c2e92e
--- /dev/null
+++ b/validation-test/compiler_crashers/27873-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct b{{}struct S{enum a{{}class A<T{func a<h{func b<T where h.g=a{}}class d{enum e{struct Q
diff --git a/validation-test/compiler_crashers/27874-swift-enumtype-get.swift b/validation-test/compiler_crashers/27874-swift-enumtype-get.swift
new file mode 100644
index 0000000000000..8b600eb88c900
--- /dev/null
+++ b/validation-test/compiler_crashers/27874-swift-enumtype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{enum a{struct S}func d<f:f.d
diff --git a/validation-test/compiler_crashers/27876-filtervalues.swift b/validation-test/compiler_crashers/27876-filtervalues.swift
new file mode 100644
index 0000000000000..01f473b9c6f10
--- /dev/null
+++ b/validation-test/compiler_crashers/27876-filtervalues.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+d< =f:{e:{class a{struct S{class A<f:f.c
diff --git a/validation-test/compiler_crashers/27877-swift-constructordecl-setbodyparams.swift b/validation-test/compiler_crashers/27877-swift-constructordecl-setbodyparams.swift
new file mode 100644
index 0000000000000..6e99616c330bb
--- /dev/null
+++ b/validation-test/compiler_crashers/27877-swift-constructordecl-setbodyparams.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{struct g{struct Q{{{{{{{}}}}}}class S<T{func a<h{func b<T where h.g=a}{}struct g
diff --git a/validation-test/compiler_crashers/27878-swift-expr-walk.swift b/validation-test/compiler_crashers/27878-swift-expr-walk.swift
new file mode 100644
index 0000000000000..506536f76b347
--- /dev/null
+++ b/validation-test/compiler_crashers/27878-swift-expr-walk.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{(struct Q{let a:d
+func a<f:f.c
+class d
diff --git a/validation-test/compiler_crashers/27879-swift-polymorphicfunctiontype-get.swift b/validation-test/compiler_crashers/27879-swift-polymorphicfunctiontype-get.swift
new file mode 100644
index 0000000000000..f519547ea51ac
--- /dev/null
+++ b/validation-test/compiler_crashers/27879-swift-polymorphicfunctiontype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{{}enum e{{{{}{{{}}}}}class S<T{func a<h{func b<T where h.g=a{}}class d{protocol A{func b<a
diff --git a/validation-test/compiler_crashers/27880-swift-nominaltypedecl-preparelookuptable.swift b/validation-test/compiler_crashers/27880-swift-nominaltypedecl-preparelookuptable.swift
new file mode 100644
index 0000000000000..b6447cde6d1db
--- /dev/null
+++ b/validation-test/compiler_crashers/27880-swift-nominaltypedecl-preparelookuptable.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{{class A{struct B{struct S<T where g:d{class A<U{{}let a{}enum A{func a{let a{func a{{d{{}}}}}}struct d{}struct d
diff --git a/validation-test/compiler_crashers/27881-swift-declcontext-getlocalconformances.swift b/validation-test/compiler_crashers/27881-swift-declcontext-getlocalconformances.swift
new file mode 100644
index 0000000000000..645e669a0849d
--- /dev/null
+++ b/validation-test/compiler_crashers/27881-swift-declcontext-getlocalconformances.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class d
+enum S<h{
+protocol a{{{}}enum S<T:T.e{}}
+struct i{
+class b{struct c{{
+}
+struct B{class D{{}
+struct B:a{
+struct d{
+struct S
diff --git a/validation-test/compiler_crashers/27882-swift-clangmoduleunit-lookupvalue.swift b/validation-test/compiler_crashers/27882-swift-clangmoduleunit-lookupvalue.swift
new file mode 100644
index 0000000000000..f0d340f8e23b9
--- /dev/null
+++ b/validation-test/compiler_crashers/27882-swift-clangmoduleunit-lookupvalue.swift
@@ -0,0 +1,19 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import Foundation
+enum S<T where S=b{
+{
+}
+{
+}
+class A{
+var f:a{
+}
+class a{
+}
+}
+}func c<I:a
diff --git a/validation-test/compiler_crashers/27883-swift-archetypebuilder-addconformancerequirement.swift b/validation-test/compiler_crashers/27883-swift-archetypebuilder-addconformancerequirement.swift
new file mode 100644
index 0000000000000..a3395016eec0a
--- /dev/null
+++ b/validation-test/compiler_crashers/27883-swift-archetypebuilder-addconformancerequirement.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class c{class d{class b{protocol o}}}enum S<T:T.e
diff --git a/validation-test/compiler_crashers/27884-swift-typechecker-callwitness.swift b/validation-test/compiler_crashers/27884-swift-typechecker-callwitness.swift
new file mode 100644
index 0000000000000..d98c909abdfb9
--- /dev/null
+++ b/validation-test/compiler_crashers/27884-swift-typechecker-callwitness.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+_=[]:{struct d{struct d<T where T:a{struct B{enum B<T{let a=B{
diff --git a/validation-test/compiler_crashers/27885-bool.swift b/validation-test/compiler_crashers/27885-bool.swift
new file mode 100644
index 0000000000000..1fadbd0b79b25
--- /dev/null
+++ b/validation-test/compiler_crashers/27885-bool.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{}{{var d{func a<f:f.s}}}
diff --git a/validation-test/compiler_crashers/27887-swift-protocolcompositiontyperepr-create.swift b/validation-test/compiler_crashers/27887-swift-protocolcompositiontyperepr-create.swift
new file mode 100644
index 0000000000000..2b530af5013c3
--- /dev/null
+++ b/validation-test/compiler_crashers/27887-swift-protocolcompositiontyperepr-create.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{func a<h{func b<T where h.g=a{}}class d{enum b{class B{func b
diff --git a/validation-test/compiler_crashers/27888-swift-typechecker-resolveinheritanceclause.swift b/validation-test/compiler_crashers/27888-swift-typechecker-resolveinheritanceclause.swift
new file mode 100644
index 0000000000000..c4565dad173ea
--- /dev/null
+++ b/validation-test/compiler_crashers/27888-swift-typechecker-resolveinheritanceclause.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{struct S{{}class A{struct Q{let a{struct d<f:f.c}class T{struct S
diff --git a/validation-test/compiler_crashers/27889-void.swift b/validation-test/compiler_crashers/27889-void.swift
new file mode 100644
index 0000000000000..3b45b0d0ea1d6
--- /dev/null
+++ b/validation-test/compiler_crashers/27889-void.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func g{
+let v{
+if true{}a{{
+}
+}}{
+struct S<T where I:a{
+class d{
+var a:T
+struct b
diff --git a/validation-test/compiler_crashers/27890-swift-typechecker-validategenerictypesignature.swift b/validation-test/compiler_crashers/27890-swift-typechecker-validategenerictypesignature.swift
new file mode 100644
index 0000000000000..49a7201f22460
--- /dev/null
+++ b/validation-test/compiler_crashers/27890-swift-typechecker-validategenerictypesignature.swift
@@ -0,0 +1,22 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class c{
+class a
+{
+}
+class A{
+struct Q{enum b{{
+}
+class a
+}struct Q{
+class a
+class b<T where h:A{
+class B
+class a{struct d<T where H:a
+{let a{
+class A:a
diff --git a/validation-test/compiler_crashers/27891-swift-typechecker-resolvesuperclass.swift b/validation-test/compiler_crashers/27891-swift-typechecker-resolvesuperclass.swift
new file mode 100644
index 0000000000000..bdac99659bf29
--- /dev/null
+++ b/validation-test/compiler_crashers/27891-swift-typechecker-resolvesuperclass.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{enum B{class T{var f=var:B<{enum b<f:f.a
diff --git a/validation-test/compiler_crashers/27892-swift-extensiondecl-getmembers.swift b/validation-test/compiler_crashers/27892-swift-extensiondecl-getmembers.swift
new file mode 100644
index 0000000000000..5e3eedab9513d
--- /dev/null
+++ b/validation-test/compiler_crashers/27892-swift-extensiondecl-getmembers.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var:{{{{struct S{let a{{{}class A{let a{class A{enum A{{{{{}}}}}enum A<f:f.c{let c{func a{{{{{{{}}}{{{{var:{let c{{{{a:{{extension
diff --git a/validation-test/compiler_crashers/27893-swift-archetypebuilder-potentialarchetype-getarchetypeanchor.swift b/validation-test/compiler_crashers/27893-swift-archetypebuilder-potentialarchetype-getarchetypeanchor.swift
new file mode 100644
index 0000000000000..e02350c402f23
--- /dev/null
+++ b/validation-test/compiler_crashers/27893-swift-archetypebuilder-potentialarchetype-getarchetypeanchor.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B{enum B:a{}protocol a{struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27894-swift-parser-parsedecl.swift b/validation-test/compiler_crashers/27894-swift-parser-parsedecl.swift
new file mode 100644
index 0000000000000..9db28d55cc412
--- /dev/null
+++ b/validation-test/compiler_crashers/27894-swift-parser-parsedecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class C{let a{enum A{struct S<f:f.c}}func b{func}}
diff --git a/validation-test/compiler_crashers/27895-swift-sourcefile-getcache.swift b/validation-test/compiler_crashers/27895-swift-sourcefile-getcache.swift
new file mode 100644
index 0000000000000..54b6649f79fca
--- /dev/null
+++ b/validation-test/compiler_crashers/27895-swift-sourcefile-getcache.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct A
+extension A{func b<f:f.d
diff --git a/validation-test/compiler_crashers/27896-swift-modulefile-configurestorage.swift b/validation-test/compiler_crashers/27896-swift-modulefile-configurestorage.swift
new file mode 100644
index 0000000000000..0f3f09e55e52d
--- /dev/null
+++ b/validation-test/compiler_crashers/27896-swift-modulefile-configurestorage.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{class a<T where h:a{struct a{class A{let a=Int}{}}class b<D:BooleanType
diff --git a/validation-test/compiler_crashers/27897-swift-typeloc-iserror.swift b/validation-test/compiler_crashers/27897-swift-typeloc-iserror.swift
new file mode 100644
index 0000000000000..8f04ff8df083c
--- /dev/null
+++ b/validation-test/compiler_crashers/27897-swift-typeloc-iserror.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{enum c{struct S{struct d{class a{class b:A}}}enum S<T:T.e
diff --git a/validation-test/compiler_crashers/27898-void.swift b/validation-test/compiler_crashers/27898-void.swift
new file mode 100644
index 0000000000000..1d53407ce0618
--- /dev/null
+++ b/validation-test/compiler_crashers/27898-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{func a<h{func b<T where h.g=a{}}struct b{{}{}}struct b{struct S{enum a{{}class A{struct g{struct Q{{}}enum b
diff --git a/validation-test/compiler_crashers/27899-swift-unboundgenerictype-get.swift b/validation-test/compiler_crashers/27899-swift-unboundgenerictype-get.swift
new file mode 100644
index 0000000000000..b77ecc36553bf
--- /dev/null
+++ b/validation-test/compiler_crashers/27899-swift-unboundgenerictype-get.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func u{enum S<T{
+func a
+class c{struct S<T{
+struct B{enum S{
+}enum S<T:T.b
diff --git a/validation-test/compiler_crashers/27900-swift-constraints-constraintsystem-assignfixedtype.swift b/validation-test/compiler_crashers/27900-swift-constraints-constraintsystem-assignfixedtype.swift
new file mode 100644
index 0000000000000..741d60e47410c
--- /dev/null
+++ b/validation-test/compiler_crashers/27900-swift-constraints-constraintsystem-assignfixedtype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B{func a{class eb{var _=a<e}{struct a{struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27902-llvm-foldingset-swift-boundgenerictype-nodeequals.swift b/validation-test/compiler_crashers/27902-llvm-foldingset-swift-boundgenerictype-nodeequals.swift
new file mode 100644
index 0000000000000..4df5fdd9a2757
--- /dev/null
+++ b/validation-test/compiler_crashers/27902-llvm-foldingset-swift-boundgenerictype-nodeequals.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<I{
+let a={a==
+b}
+class b<T where B:e{
+struct S
+struct S{
+func a{
+S
diff --git a/validation-test/compiler_crashers/27903-swift-genericfunctiontype-get.swift b/validation-test/compiler_crashers/27903-swift-genericfunctiontype-get.swift
new file mode 100644
index 0000000000000..f604a039c0925
--- /dev/null
+++ b/validation-test/compiler_crashers/27903-swift-genericfunctiontype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import CoreData:let a{struct Q{class B{}}class a{class A{func a<U:U.B
diff --git a/validation-test/compiler_crashers/27904-swift-funcdecl-isdeferbody.swift b/validation-test/compiler_crashers/27904-swift-funcdecl-isdeferbody.swift
new file mode 100644
index 0000000000000..84739430caee4
--- /dev/null
+++ b/validation-test/compiler_crashers/27904-swift-funcdecl-isdeferbody.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{{:}{class a{func d{{{}func b{class C}}}}}}b}}{{let a{struct S<f:f.c}}}
diff --git a/validation-test/compiler_crashers/27905-swift-constraints-constraintgraph-change-undo.swift b/validation-test/compiler_crashers/27905-swift-constraints-constraintgraph-change-undo.swift
new file mode 100644
index 0000000000000..ad4725de29f14
--- /dev/null
+++ b/validation-test/compiler_crashers/27905-swift-constraints-constraintgraph-change-undo.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{{{func x{let a={func d<f:f.c
diff --git a/validation-test/compiler_crashers/27906-swift-valuedecl.swift b/validation-test/compiler_crashers/27906-swift-valuedecl.swift
new file mode 100644
index 0000000000000..503fb3b27108f
--- /dev/null
+++ b/validation-test/compiler_crashers/27906-swift-valuedecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B}struct B<T where B:a{{}enum S<b:b.E
diff --git a/validation-test/compiler_crashers/27907-swift-constraints-constraintsystem-solvesimplified.swift b/validation-test/compiler_crashers/27907-swift-constraints-constraintsystem-solvesimplified.swift
new file mode 100644
index 0000000000000..1b7c20184da3c
--- /dev/null
+++ b/validation-test/compiler_crashers/27907-swift-constraints-constraintsystem-solvesimplified.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{struct D{struct d{enum B{struct S<f:f.c
diff --git a/validation-test/compiler_crashers/27908-llvm-smallvectorimpl-swift-diagnosticargument-operator.swift b/validation-test/compiler_crashers/27908-llvm-smallvectorimpl-swift-diagnosticargument-operator.swift
new file mode 100644
index 0000000000000..a6cf7a99c926e
--- /dev/null
+++ b/validation-test/compiler_crashers/27908-llvm-smallvectorimpl-swift-diagnosticargument-operator.swift
@@ -0,0 +1,19 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct w
+func<{struct g
+class a{
+class B{
+class A{
+struct a{
+struct B{struct A{
+func b{
+}
+class B:a
+class B
+class a{deinit{
+{}enum S<f:f.c
diff --git a/validation-test/compiler_crashers/27909-llvm-densemapbase-llvm-densemap-swift-identifier.swift b/validation-test/compiler_crashers/27909-llvm-densemapbase-llvm-densemap-swift-identifier.swift
new file mode 100644
index 0000000000000..685559add67fd
--- /dev/null
+++ b/validation-test/compiler_crashers/27909-llvm-densemapbase-llvm-densemap-swift-identifier.swift
@@ -0,0 +1,19 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+b
+enum S{
+class b<T where I.g =B
+{
+class A{
+let t:e
+princol {
+a
+"
+let a =Int
+protocol P {{
+{
diff --git a/validation-test/compiler_crashers/27910-swift-conformancelookuptable-updatelookuptable.swift b/validation-test/compiler_crashers/27910-swift-conformancelookuptable-updatelookuptable.swift
new file mode 100644
index 0000000000000..5be69bc8ee564
--- /dev/null
+++ b/validation-test/compiler_crashers/27910-swift-conformancelookuptable-updatelookuptable.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+protocol A{
+func b
+func
+v
+class d<T:T.h
+}
+struct S:A
diff --git a/validation-test/compiler_crashers/27911-swift-declcontext-getdeclaredtypeincontext.swift b/validation-test/compiler_crashers/27911-swift-declcontext-getdeclaredtypeincontext.swift
new file mode 100644
index 0000000000000..fdcbd2f046122
--- /dev/null
+++ b/validation-test/compiler_crashers/27911-swift-declcontext-getdeclaredtypeincontext.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{struct e{class B<d where g=F>:B}}class S<T{func a<h{func b<T where h.g=c
diff --git a/validation-test/compiler_crashers/27912-swift-classtype-get.swift b/validation-test/compiler_crashers/27912-swift-classtype-get.swift
new file mode 100644
index 0000000000000..a32f8ea5f8286
--- /dev/null
+++ b/validation-test/compiler_crashers/27912-swift-classtype-get.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class A{let d{}class C
+struct B{struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27913-swift-typechecker-checkgenericarguments.swift b/validation-test/compiler_crashers/27913-swift-typechecker-checkgenericarguments.swift
new file mode 100644
index 0000000000000..d8267aa63c8ed
--- /dev/null
+++ b/validation-test/compiler_crashers/27913-swift-typechecker-checkgenericarguments.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct A<T where g:A{class B{let s={class C
diff --git a/validation-test/compiler_crashers/27915-swift-typechecker-checkomitneedlesswords.swift b/validation-test/compiler_crashers/27915-swift-typechecker-checkomitneedlesswords.swift
new file mode 100644
index 0000000000000..c7e1f8e16bcd7
--- /dev/null
+++ b/validation-test/compiler_crashers/27915-swift-typechecker-checkomitneedlesswords.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{func a<h{func b<T where h.g=a{}}
+enum a{{{}}struct b{{}struct S{enum a{{}class A{class a
+let a
+func a
diff --git a/validation-test/compiler_crashers/27916-swift-sourcemanager-getmessage.swift b/validation-test/compiler_crashers/27916-swift-sourcemanager-getmessage.swift
new file mode 100644
index 0000000000000..850ec81ea355e
--- /dev/null
+++ b/validation-test/compiler_crashers/27916-swift-sourcemanager-getmessage.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class A{let:Array}class B<f:f.c
diff --git a/validation-test/compiler_crashers/27917-swift-printdecldescription.swift b/validation-test/compiler_crashers/27917-swift-printdecldescription.swift
new file mode 100644
index 0000000000000..9d2d9a06d85e1
--- /dev/null
+++ b/validation-test/compiler_crashers/27917-swift-printdecldescription.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{struct A{
+let h
+let=
+{{{
+{}}}{}
+{{
+{ {
+}}}}}}}class S<T{func a<h{func b<T where h.g=a{}}
+enum a{{
+b"
+class a
diff --git a/validation-test/compiler_crashers/27918-swift-archetypebuilder-potentialarchetype-gettype.swift b/validation-test/compiler_crashers/27918-swift-archetypebuilder-potentialarchetype-gettype.swift
new file mode 100644
index 0000000000000..36a52dbbf077c
--- /dev/null
+++ b/validation-test/compiler_crashers/27918-swift-archetypebuilder-potentialarchetype-gettype.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{
+class T{let i{
+struct B<f:f.c
+}
+class A{{}struct c{protocol B{
+var:B
+struct Q<T
diff --git a/validation-test/compiler_crashers/27919-swift-stmt-walk.swift b/validation-test/compiler_crashers/27919-swift-stmt-walk.swift
new file mode 100644
index 0000000000000..f6d7776044793
--- /dev/null
+++ b/validation-test/compiler_crashers/27919-swift-stmt-walk.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{a b}let i{var _={class A{struct g<f:f.a
diff --git a/validation-test/compiler_crashers/27920-void.swift b/validation-test/compiler_crashers/27920-void.swift
new file mode 100644
index 0000000000000..f3b2b7359ddce
--- /dev/null
+++ b/validation-test/compiler_crashers/27920-void.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum S{
+class d{class b{enum a{class b{class
+b}}
+}}}struct i{
+struct B<T:T.e
diff --git a/validation-test/compiler_crashers/27921-swift-conformancelookuptable-expandimpliedconformances.swift b/validation-test/compiler_crashers/27921-swift-conformancelookuptable-expandimpliedconformances.swift
new file mode 100644
index 0000000000000..e214105e4e7fd
--- /dev/null
+++ b/validation-test/compiler_crashers/27921-swift-conformancelookuptable-expandimpliedconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{class a){struct b}protocol A{class B<f:f.B{{}}func g:B
diff --git a/validation-test/compiler_crashers/27922-swift-unqualifiedlookup-unqualifiedlookup.swift b/validation-test/compiler_crashers/27922-swift-unqualifiedlookup-unqualifiedlookup.swift
new file mode 100644
index 0000000000000..9ca1a7e06ddd3
--- /dev/null
+++ b/validation-test/compiler_crashers/27922-swift-unqualifiedlookup-unqualifiedlookup.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a}enum S<U:a{class a{var h{func g{{class c<I:a{}enum S<T:T.a
diff --git a/validation-test/compiler_crashers/27923-swift-modulefile-gettype.swift b/validation-test/compiler_crashers/27923-swift-modulefile-gettype.swift
new file mode 100644
index 0000000000000..cd47c20cdc4b3
--- /dev/null
+++ b/validation-test/compiler_crashers/27923-swift-modulefile-gettype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+extension String{enum a{{}}class B{class B<f:f.c
diff --git a/validation-test/compiler_crashers/27924-swift-typechecker-typecheckexpression.swift b/validation-test/compiler_crashers/27924-swift-typechecker-typecheckexpression.swift
new file mode 100644
index 0000000000000..7c2a423db730a
--- /dev/null
+++ b/validation-test/compiler_crashers/27924-swift-typechecker-typecheckexpression.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{protocol a{struct Q<f:f.c}let
+d{struct B:a
diff --git a/validation-test/compiler_crashers/27925-swift-modulefile-loadextensions.swift b/validation-test/compiler_crashers/27925-swift-modulefile-loadextensions.swift
new file mode 100644
index 0000000000000..1b168b03b9c07
--- /dev/null
+++ b/validation-test/compiler_crashers/27925-swift-modulefile-loadextensions.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{}
+{class A{
+class A{
+struct c
+let
+:{{{}import
+{{{class B{{}enum A<f:f.c
+}}}{
diff --git a/validation-test/compiler_crashers/27926-swift-clangmoduleunit-lookupvalue.swift b/validation-test/compiler_crashers/27926-swift-clangmoduleunit-lookupvalue.swift
new file mode 100644
index 0000000000000..abcf14afd4fd4
--- /dev/null
+++ b/validation-test/compiler_crashers/27926-swift-clangmoduleunit-lookupvalue.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum a:let a{
+enum w{
+class b
+let t=}}class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/27927-swift-modulefile-maybereadpattern.swift b/validation-test/compiler_crashers/27927-swift-modulefile-maybereadpattern.swift
new file mode 100644
index 0000000000000..05d8795a8a739
--- /dev/null
+++ b/validation-test/compiler_crashers/27927-swift-modulefile-maybereadpattern.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{struct B<T where B=o{var:BooleanType{var:T.h={
diff --git a/validation-test/compiler_crashers/27928-swift-typechecker-validatedecl.swift b/validation-test/compiler_crashers/27928-swift-typechecker-validatedecl.swift
new file mode 100644
index 0000000000000..2676bec4bbe1e
--- /dev/null
+++ b/validation-test/compiler_crashers/27928-swift-typechecker-validatedecl.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let :{enum Ba{
+"
+{}protocol a{{a{
+"
+func c
+}}struct Q<b{
+struct S<f:f.c
diff --git a/validation-test/compiler_crashers/27929-swift-clangimporter-lookupvalue.swift b/validation-test/compiler_crashers/27929-swift-clangimporter-lookupvalue.swift
new file mode 100644
index 0000000000000..da08b57fcd891
--- /dev/null
+++ b/validation-test/compiler_crashers/27929-swift-clangimporter-lookupvalue.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import CoreData{
+class B<T where h:r
+import{{}struct d{struct S<f:f.c
diff --git a/validation-test/compiler_crashers/27930-swift-clangimporter-implementation-importattributes.swift b/validation-test/compiler_crashers/27930-swift-clangimporter-implementation-importattributes.swift
new file mode 100644
index 0000000000000..bb022f71c0dd8
--- /dev/null
+++ b/validation-test/compiler_crashers/27930-swift-clangimporter-implementation-importattributes.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{_== func c{{{enum A{struct S<f:f.l}}{
diff --git a/validation-test/compiler_crashers/27931-swift-constraints-constraintsystem-salvage.swift b/validation-test/compiler_crashers/27931-swift-constraints-constraintsystem-salvage.swift
new file mode 100644
index 0000000000000..566d17d1dd705
--- /dev/null
+++ b/validation-test/compiler_crashers/27931-swift-constraints-constraintsystem-salvage.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{_{}struct Q<f:d class d<f:f.c
diff --git a/validation-test/compiler_crashers/27932-swift-constraints-constraintsystem-generateconstraints.swift b/validation-test/compiler_crashers/27932-swift-constraints-constraintsystem-generateconstraints.swift
new file mode 100644
index 0000000000000..06a3911630ef0
--- /dev/null
+++ b/validation-test/compiler_crashers/27932-swift-constraints-constraintsystem-generateconstraints.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct a{var d="
+{
+struct B{struct Q{
+class A{
+func a<f:f.H
diff --git a/validation-test/compiler_crashers/27933-swift-constraints-constraintsystem-simplifytype.swift b/validation-test/compiler_crashers/27933-swift-constraints-constraintsystem-simplifytype.swift
new file mode 100644
index 0000000000000..fc9423a09015c
--- /dev/null
+++ b/validation-test/compiler_crashers/27933-swift-constraints-constraintsystem-simplifytype.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+.B:{struct B<T where h:C{class B{class a
+class d:a
diff --git a/validation-test/compiler_crashers/27934-swift-genericsignature-getcanonical.swift b/validation-test/compiler_crashers/27934-swift-genericsignature-getcanonical.swift
new file mode 100644
index 0000000000000..5f27922447ed5
--- /dev/null
+++ b/validation-test/compiler_crashers/27934-swift-genericsignature-getcanonical.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{T->{protocol C{func t}}}var _{{enum A{enum A<f:f.s}}{
diff --git a/validation-test/compiler_crashers/27935-swift-moduledecl-lookupconformance.swift b/validation-test/compiler_crashers/27935-swift-moduledecl-lookupconformance.swift
new file mode 100644
index 0000000000000..031780f3b3b79
--- /dev/null
+++ b/validation-test/compiler_crashers/27935-swift-moduledecl-lookupconformance.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B
+func a{{class e{
+class A{enum A{
+class A}}}struct Q<f:f.c
diff --git a/validation-test/compiler_crashers/27936-swift-structtype-get.swift b/validation-test/compiler_crashers/27936-swift-structtype-get.swift
new file mode 100644
index 0000000000000..be77f6873242f
--- /dev/null
+++ b/validation-test/compiler_crashers/27936-swift-structtype-get.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let A{struct Q<T where g:A{struct A{class a{var b=0
+let:String
diff --git a/validation-test/compiler_crashers/27937-swift-substitutedtype-get.swift b/validation-test/compiler_crashers/27937-swift-substitutedtype-get.swift
new file mode 100644
index 0000000000000..6498bd2d7064a
--- /dev/null
+++ b/validation-test/compiler_crashers/27937-swift-substitutedtype-get.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+[true
+func{class A{class B{class a{class a{
+struct d<f:f.c
diff --git a/validation-test/compiler_crashers/27938-swift-arrayexpr-create.swift b/validation-test/compiler_crashers/27938-swift-arrayexpr-create.swift
new file mode 100644
index 0000000000000..0281c5f3cae18
--- /dev/null
+++ b/validation-test/compiler_crashers/27938-swift-arrayexpr-create.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{func a{struct Q<f:f.a}}
+[t}
diff --git a/validation-test/compiler_crashers/27939-vtable.swift b/validation-test/compiler_crashers/27939-vtable.swift
new file mode 100644
index 0000000000000..abdd8421c2075
--- /dev/null
+++ b/validation-test/compiler_crashers/27939-vtable.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<T {
+class A : A.e {
+func e: T.e
diff --git a/validation-test/compiler_crashers/27940-swift-typechecker-resolvesuperclass.swift b/validation-test/compiler_crashers/27940-swift-typechecker-resolvesuperclass.swift
new file mode 100644
index 0000000000000..b05725a14122f
--- /dev/null
+++ b/validation-test/compiler_crashers/27940-swift-typechecker-resolvesuperclass.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class A c{class A:A:class B<T{{{{{}}}}class b:A
+}}class B<T where h:C{class b
+let f=b(
diff --git a/validation-test/compiler_crashers/27941-swift-constraints-constraintgraph-removeconstraint.swift b/validation-test/compiler_crashers/27941-swift-constraints-constraintgraph-removeconstraint.swift
new file mode 100644
index 0000000000000..7288d51030f92
--- /dev/null
+++ b/validation-test/compiler_crashers/27941-swift-constraints-constraintgraph-removeconstraint.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func p{<e
+let:{class c{
+class A{
+class B{
+struct Q<d where g:e
+{
+enum b{
+class a
+class A{struct b{
+class B:a
diff --git a/validation-test/compiler_crashers/27942-resolveidenttypecomponent.swift b/validation-test/compiler_crashers/27942-resolveidenttypecomponent.swift
new file mode 100644
index 0000000000000..ef9810c5c6cc0
--- /dev/null
+++ b/validation-test/compiler_crashers/27942-resolveidenttypecomponent.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct h{struct Q<f:f.a
+struct d: y<:{
diff --git a/validation-test/compiler_crashers/27943-swift-astcontext-getinheritedconformance.swift b/validation-test/compiler_crashers/27943-swift-astcontext-getinheritedconformance.swift
new file mode 100644
index 0000000000000..7db750d3b2cce
--- /dev/null
+++ b/validation-test/compiler_crashers/27943-swift-astcontext-getinheritedconformance.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var f{{let t{(}struct B{{}struct c{class B<T where h:a{class A{class B{class k:A
diff --git a/validation-test/compiler_crashers/27944-swift-astvisitor.swift b/validation-test/compiler_crashers/27944-swift-astvisitor.swift
new file mode 100644
index 0000000000000..032a0661f6f65
--- /dev/null
+++ b/validation-test/compiler_crashers/27944-swift-astvisitor.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{struct a<b{struct A{let s=[[c}func c
diff --git a/validation-test/compiler_crashers/27945-swift-conformancelookuptable-resolveconformances.swift b/validation-test/compiler_crashers/27945-swift-conformancelookuptable-resolveconformances.swift
new file mode 100644
index 0000000000000..2f06210f66d74
--- /dev/null
+++ b/validation-test/compiler_crashers/27945-swift-conformancelookuptable-resolveconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S{enum S<T where g:B{class a{let s=""
diff --git a/validation-test/compiler_crashers/27946-swift-archetypebuilder-potentialarchetype-isbetterarchetypeanchor.swift b/validation-test/compiler_crashers/27946-swift-archetypebuilder-potentialarchetype-isbetterarchetypeanchor.swift
new file mode 100644
index 0000000000000..812477993b06d
--- /dev/null
+++ b/validation-test/compiler_crashers/27946-swift-archetypebuilder-potentialarchetype-isbetterarchetypeanchor.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var b{
+struct S{
+struct B)protocol a
+enum B<h:a{class d<T:T.e
diff --git a/validation-test/compiler_crashers/27947-swift-parser-parsebraceitems.swift b/validation-test/compiler_crashers/27947-swift-parser-parsebraceitems.swift
new file mode 100644
index 0000000000000..9793f55d81dfb
--- /dev/null
+++ b/validation-test/compiler_crashers/27947-swift-parser-parsebraceitems.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+e
+if t{class
+case,case
diff --git a/validation-test/compiler_crashers/27948-swift-constraints-constraintsystem-performmemberlookup.swift b/validation-test/compiler_crashers/27948-swift-constraints-constraintsystem-performmemberlookup.swift
new file mode 100644
index 0000000000000..b42ba9eb5e41d
--- /dev/null
+++ b/validation-test/compiler_crashers/27948-swift-constraints-constraintsystem-performmemberlookup.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct Q<T where I=e{let a{enum b
+{
+var e
+let a=e
+let:T.E=b
diff --git a/validation-test/compiler_crashers/27949-swift-genericparamlist-create.swift b/validation-test/compiler_crashers/27949-swift-genericparamlist-create.swift
new file mode 100644
index 0000000000000..78f83d34b0598
--- /dev/null
+++ b/validation-test/compiler_crashers/27949-swift-genericparamlist-create.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let:SequenceType{{class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/27950-swift-unqualifiedlookup-unqualifiedlookup.swift b/validation-test/compiler_crashers/27950-swift-unqualifiedlookup-unqualifiedlookup.swift
new file mode 100644
index 0000000000000..2c23d4bb18e60
--- /dev/null
+++ b/validation-test/compiler_crashers/27950-swift-unqualifiedlookup-unqualifiedlookup.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a<h{struct B<I{let:{{enum A{let t:A?{{class b<T where I.c:T
diff --git a/validation-test/compiler_crashers/27951-swift-astcontext-getspecializedconformance.swift b/validation-test/compiler_crashers/27951-swift-astcontext-getspecializedconformance.swift
new file mode 100644
index 0000000000000..38042e5686c2d
--- /dev/null
+++ b/validation-test/compiler_crashers/27951-swift-astcontext-getspecializedconformance.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{[true
+var _{}class A<f:d
+class d<f:f.c
diff --git a/validation-test/compiler_crashers/27953-swift-modulefile-getcommentfordecl.swift b/validation-test/compiler_crashers/27953-swift-modulefile-getcommentfordecl.swift
new file mode 100644
index 0000000000000..f57937563954c
--- /dev/null
+++ b/validation-test/compiler_crashers/27953-swift-modulefile-getcommentfordecl.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{
+enum k:A{
+class a{class a{enum B{
+enum b
+func b<f:f.
+e
diff --git a/validation-test/compiler_crashers/27955-swift-declattribute-print.swift b/validation-test/compiler_crashers/27955-swift-declattribute-print.swift
new file mode 100644
index 0000000000000..e4ecc5a1bec92
--- /dev/null
+++ b/validation-test/compiler_crashers/27955-swift-declattribute-print.swift
@@ -0,0 +1,20 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{
+{
+{
+{
+{
+{
+}}}}}
+struct B<T{class D{
+struct a{
+class d
+func u{
+{}}struct d
+}}
+enum S<T: T.b
diff --git a/validation-test/compiler_crashers/27956-swift-expr-walk.swift b/validation-test/compiler_crashers/27956-swift-expr-walk.swift
new file mode 100644
index 0000000000000..777a12e5ca66d
--- /dev/null
+++ b/validation-test/compiler_crashers/27956-swift-expr-walk.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let t{class B{class A{struct e{class A{let t={class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/27957-swift-inflightdiagnostic-fixitremove.swift b/validation-test/compiler_crashers/27957-swift-inflightdiagnostic-fixitremove.swift
new file mode 100644
index 0000000000000..861c4d8f34c81
--- /dev/null
+++ b/validation-test/compiler_crashers/27957-swift-inflightdiagnostic-fixitremove.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b{let e=()?var d{struct d<T where h:b{class a{{}class a{struct S<T{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/27958-swift-typechecker-isdeclavailable.swift b/validation-test/compiler_crashers/27958-swift-typechecker-isdeclavailable.swift
new file mode 100644
index 0000000000000..e80019fa048de
--- /dev/null
+++ b/validation-test/compiler_crashers/27958-swift-typechecker-isdeclavailable.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+if true{
+}struct B<d where I:a{enum B{
+class d
+class A:d
diff --git a/validation-test/compiler_crashers/27959-swift-conformancelookuptable-conformancelookuptable.swift b/validation-test/compiler_crashers/27959-swift-conformancelookuptable-conformancelookuptable.swift
new file mode 100644
index 0000000000000..e1feee7ed25a3
--- /dev/null
+++ b/validation-test/compiler_crashers/27959-swift-conformancelookuptable-conformancelookuptable.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{{class d e{struct S<T where g:d{var b{{let:T.E={}}}struct b
diff --git a/validation-test/compiler_crashers/27960-swift-constraints-constraintsystem-opentype.swift b/validation-test/compiler_crashers/27960-swift-constraints-constraintsystem-opentype.swift
new file mode 100644
index 0000000000000..f34ea4a9fd37b
--- /dev/null
+++ b/validation-test/compiler_crashers/27960-swift-constraints-constraintsystem-opentype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct B:a{{}}B<f{}class a{enum a{struct i{class a{struct c<T:T.e
diff --git a/validation-test/compiler_crashers/27961-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/27961-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..befc5da95c7eb
--- /dev/null
+++ b/validation-test/compiler_crashers/27961-swift-inflightdiagnostic.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct Q{
+struct A{struct c<T{var f=c
+struct
+u:AnyObject.c}}
+}struct b<T where g:a{
+class B
+class b{
+var _=B
+}enum B
diff --git a/validation-test/compiler_crashers/27962-swift-rebindselfinconstructorexpr-getcalledconstructor.swift b/validation-test/compiler_crashers/27962-swift-rebindselfinconstructorexpr-getcalledconstructor.swift
new file mode 100644
index 0000000000000..694a49ced71c5
--- /dev/null
+++ b/validation-test/compiler_crashers/27962-swift-rebindselfinconstructorexpr-getcalledconstructor.swift
@@ -0,0 +1,24 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var a{
+var a[{{
+{{e,
+{{
+}struct Q<T where a=b{
+class d{
+let f=[{
+b{
+}{{var b{
+if true{
+}}}
+struct b{let a{return{==
+let
+{
+case
+a{
+b{
+}{e f
diff --git a/validation-test/compiler_crashers/27963-swift-typechecker-checkunsupportedprotocoltype.swift b/validation-test/compiler_crashers/27963-swift-typechecker-checkunsupportedprotocoltype.swift
new file mode 100644
index 0000000000000..2bf7165239a99
--- /dev/null
+++ b/validation-test/compiler_crashers/27963-swift-typechecker-checkunsupportedprotocoltype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{}class C{struct B{struct c{func a<f:f.r
diff --git a/validation-test/compiler_crashers/27964-swift-conformancelookuptable-compareprotocolconformances.swift b/validation-test/compiler_crashers/27964-swift-conformancelookuptable-compareprotocolconformances.swift
new file mode 100644
index 0000000000000..0f41d08875c27
--- /dev/null
+++ b/validation-test/compiler_crashers/27964-swift-conformancelookuptable-compareprotocolconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{{if{class C{struct A<T where g:a{class c:BooleanType{let t{let:T.B?=0
diff --git a/validation-test/compiler_crashers/27965-llvm-foldingset-swift-tupletype-nodeequals.swift b/validation-test/compiler_crashers/27965-llvm-foldingset-swift-tupletype-nodeequals.swift
new file mode 100644
index 0000000000000..f610fd0890a4a
--- /dev/null
+++ b/validation-test/compiler_crashers/27965-llvm-foldingset-swift-tupletype-nodeequals.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var:{
+class A{struct w{
+class b{
+class a{class B{let:a=a{enum S{class a
+var d{
+let e=a{
+class a{}struct d{class B{class a{
+protocol A{
+func a{}
+func a<f:f.c
+func
diff --git a/validation-test/compiler_crashers/27966-swift-dependentmembertype-get.swift b/validation-test/compiler_crashers/27966-swift-dependentmembertype-get.swift
new file mode 100644
index 0000000000000..96b28286925dd
--- /dev/null
+++ b/validation-test/compiler_crashers/27966-swift-dependentmembertype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct A:Int T{struct A{class A{func a<f:f.c
diff --git a/validation-test/compiler_crashers/27967-swift-valuedecl-getoverloadsignature.swift b/validation-test/compiler_crashers/27967-swift-valuedecl-getoverloadsignature.swift
new file mode 100644
index 0000000000000..1a638161399e5
--- /dev/null
+++ b/validation-test/compiler_crashers/27967-swift-valuedecl-getoverloadsignature.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum S<T where B<T>:A{enum k:T.c{
+class c{struct S{{}
+class p{
+struct S{
+class
+a
diff --git a/validation-test/compiler_crashers/27969-void.swift b/validation-test/compiler_crashers/27969-void.swift
new file mode 100644
index 0000000000000..a2ad7824c4916
--- /dev/null
+++ b/validation-test/compiler_crashers/27969-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{deinit{class a{struct A{class A{enum a{protocol c}}}}}class S<T{func a<h{func b<T where h.g=b
diff --git a/validation-test/compiler_crashers/27970-swift-typechecker-typecheckbinding.swift b/validation-test/compiler_crashers/27970-swift-typechecker-typecheckbinding.swift
new file mode 100644
index 0000000000000..25074eb8817c4
--- /dev/null
+++ b/validation-test/compiler_crashers/27970-swift-typechecker-typecheckbinding.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{func a<h{func b<T where h.g=b}}if{struct A{struct Q{class a{class A{var _=
diff --git a/validation-test/compiler_crashers/27971-swift-constraints-constraintsystem-applysolution.swift b/validation-test/compiler_crashers/27971-swift-constraints-constraintsystem-applysolution.swift
new file mode 100644
index 0000000000000..06645a8551ade
--- /dev/null
+++ b/validation-test/compiler_crashers/27971-swift-constraints-constraintsystem-applysolution.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b<a{
+class B:b
+var:{
+class a{enum B{enum B<f:f.c
diff --git a/validation-test/compiler_crashers/27972-swift-maybeaddaccessorstovariable.swift b/validation-test/compiler_crashers/27972-swift-maybeaddaccessorstovariable.swift
new file mode 100644
index 0000000000000..44602b3931360
--- /dev/null
+++ b/validation-test/compiler_crashers/27972-swift-maybeaddaccessorstovariable.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let c
+struct Q<d where g:A{var _=a<c
+class a<T
diff --git a/validation-test/compiler_crashers/27973-swift-typechecker-substituteinputsugartypeforresult.swift b/validation-test/compiler_crashers/27973-swift-typechecker-substituteinputsugartypeforresult.swift
new file mode 100644
index 0000000000000..d811f626ab12c
--- /dev/null
+++ b/validation-test/compiler_crashers/27973-swift-typechecker-substituteinputsugartypeforresult.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{1
+enum S{
+class d{class d{
+class a{class c<T where B:A}enum B<T:T.e
diff --git a/validation-test/compiler_crashers/27974-swift-inflightdiagnostic-fixitreplacechars.swift b/validation-test/compiler_crashers/27974-swift-inflightdiagnostic-fixitreplacechars.swift
new file mode 100644
index 0000000000000..c2249ade9e4a0
--- /dev/null
+++ b/validation-test/compiler_crashers/27974-swift-inflightdiagnostic-fixitreplacechars.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a<f:f.c
+var _={a b
diff --git a/validation-test/compiler_crashers/27975-swift-genericsignature-get.swift b/validation-test/compiler_crashers/27975-swift-genericsignature-get.swift
new file mode 100644
index 0000000000000..a0d29d4f7d194
--- /dev/null
+++ b/validation-test/compiler_crashers/27975-swift-genericsignature-get.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d:Array
+e{class A{class B<f:f.c
diff --git a/validation-test/compiler_crashers/27976-swift-mangle-mangler-mangletype.swift b/validation-test/compiler_crashers/27976-swift-mangle-mangler-mangletype.swift
new file mode 100644
index 0000000000000..5c10f2015d55c
--- /dev/null
+++ b/validation-test/compiler_crashers/27976-swift-mangle-mangler-mangletype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+map:{class A{enum B<f:f.i
diff --git a/validation-test/compiler_crashers/27977-swift-substitutedtype-get.swift b/validation-test/compiler_crashers/27977-swift-substitutedtype-get.swift
new file mode 100644
index 0000000000000..80268e78833d6
--- /dev/null
+++ b/validation-test/compiler_crashers/27977-swift-substitutedtype-get.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B<d{class C{
+struct P{
+class B{struct S{struct c
+let h=c
+protocol A{
+func a<f:f.c
diff --git a/validation-test/compiler_crashers/27978-swift-typechecker-solveforexpression.swift b/validation-test/compiler_crashers/27978-swift-typechecker-solveforexpression.swift
new file mode 100644
index 0000000000000..e85f254702313
--- /dev/null
+++ b/validation-test/compiler_crashers/27978-swift-typechecker-solveforexpression.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+}class B{c{"
+let a
+let :a {}
+class A<f:f.
+c
diff --git a/validation-test/compiler_crashers/27979-swift-conformancelookuptable-lookupconformances.swift b/validation-test/compiler_crashers/27979-swift-conformancelookuptable-lookupconformances.swift
new file mode 100644
index 0000000000000..835647b1757f3
--- /dev/null
+++ b/validation-test/compiler_crashers/27979-swift-conformancelookuptable-lookupconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{{class b{struct d{class b{struct b{class a<T where h=A{enum B{struct A{struct A{}struct a{struct S{class b{let:{var _=a{
diff --git a/validation-test/compiler_crashers/27980-matchcallarguments.swift b/validation-test/compiler_crashers/27980-matchcallarguments.swift
new file mode 100644
index 0000000000000..df3837a5a278c
--- /dev/null
+++ b/validation-test/compiler_crashers/27980-matchcallarguments.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{r S}{func c{protocol A{func a:d struct d<f:f.a
diff --git a/validation-test/compiler_crashers/27981-std-function-func.swift b/validation-test/compiler_crashers/27981-std-function-func.swift
new file mode 100644
index 0000000000000..2e991efd27679
--- /dev/null
+++ b/validation-test/compiler_crashers/27981-std-function-func.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{{if{class b<T where k=d{class B{var b={
diff --git a/validation-test/compiler_crashers/27982-swift-constraints-constraintsystem-diagnosefailureforexpr.swift b/validation-test/compiler_crashers/27982-swift-constraints-constraintsystem-diagnosefailureforexpr.swift
new file mode 100644
index 0000000000000..25454ec4c93f0
--- /dev/null
+++ b/validation-test/compiler_crashers/27982-swift-constraints-constraintsystem-diagnosefailureforexpr.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{var _=B{}class B{typealias e=a
+func a<f:f.c
diff --git a/validation-test/compiler_crashers/27984-llvm-densemapbase-llvm-densemap-swift-declname.swift b/validation-test/compiler_crashers/27984-llvm-densemapbase-llvm-densemap-swift-declname.swift
new file mode 100644
index 0000000000000..3494d9d14b20e
--- /dev/null
+++ b/validation-test/compiler_crashers/27984-llvm-densemapbase-llvm-densemap-swift-declname.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T{enum S<h{protocol A{{
+}
+func g:A
+struct A:B<T>
+struct B<a
diff --git a/validation-test/compiler_crashers/27986-swift-abstractfunctiondecl-setgenericparams.swift b/validation-test/compiler_crashers/27986-swift-abstractfunctiondecl-setgenericparams.swift
new file mode 100644
index 0000000000000..64b9544abb521
--- /dev/null
+++ b/validation-test/compiler_crashers/27986-swift-abstractfunctiondecl-setgenericparams.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+for c where
+{{{
+s{
+{}
+b {
+h}}}class S<T{func a<h{func b<T where h.g=a{c
diff --git a/validation-test/compiler_crashers/27988-swift-inflightdiagnostic-fixitreplacechars.swift b/validation-test/compiler_crashers/27988-swift-inflightdiagnostic-fixitreplacechars.swift
new file mode 100644
index 0000000000000..c30052c788dcb
--- /dev/null
+++ b/validation-test/compiler_crashers/27988-swift-inflightdiagnostic-fixitreplacechars.swift
@@ -0,0 +1,109 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b=l
+let:b}struct B{class a=l
+func a<I func a}}}struct X<T:T.a
+var f=("
+class d<T enum S<h{
+typealias F>("
+class A{{d
+enum B{
+enum S<T where g: d = [ 1 )
+class c{{
+protocol A{class d{
+{class A{d{
+class c<T where g:{}typealias d<I func b{
+class A{{class A{
+typealias d
+class A{{{
+var _=b{}}}struct S{class S<
+enum a}b
+func b
+{}typealias F>(b=1
+var f{class a}}}b}}}struct S<B<H.h=F=b{enum a}struct B{
+{class b{let f{
+enum S
+if true{class B{class b<T where h.g=a{
+}}typealias F=F>(b<
+var f=1
+let f=1
+{
+}}}struct S{{
+func b<I func a<H.h{{class b<T where h.g=a{
+class c{{enum a{class b=c{class b{
+let a enum b=("
+typealias d<I func a{class a{class S<I func b<T where h.g=a{
+class B{
+func g:d<
+class
+func g:e{class c<T where g:e{class c,case
+struct g mb:d<h{class d<a}}class b<T{
+import a{class a enum b{class A{class d} Int] g mb:b:e{class A{class d:d<T where g: AnyObject
+func a}struct g : AnyObject
+typealias d<T where g{{{class a {class A{class A{{{ {
+var f{
+class B{class a = d:{func b<let a = [ 1 )
+func g:{b {
+if true{var b
+{class A{< }}enum a<T where g:Int a
+let:{{{
+}struct X<T:T.a
+enum S<I func a<I : d = [ 1 )
+}struct Q<T{{ {{< }}enum a<T where g:Int a
+var f{
+}struct B<T enum b{{class A{class d
+func g{{class d{< }}enum a<T where g:Int a
+class S<T where g:e{}struct B{{}}}struct Q<T where H{
+var _=(b{class A{let f=(b{class b<T where h.g=a{
+class d:{{
+func g: AnyObject
+class a}class a}}}struct B<T{let a {class a=c,case
+func a{{
+class d<T where g:e{
+}struct S<B{class b=("
+let f{class b
+typealias d<T where g:d:d} Int] g : d = d} Int] g : f {class a{
+class S<I : d = d<T where g:d
+func b{class a{b {struct Q<
+class b{}
+class c{class d} Int] g mb:{class A{
+func p{func p{
+class A{class b<T where h.g=a{
+}}class a enum S
+case c{class A{
+enum b{struct g : d = [ 1 )
+func a<T where g: d where g: d where g: d = d:{
+func a}protocol A{func a{var f{
+protocol A{
+class a{struct S{
+class A{d
+}
+protocol A{
+let : AnyObject
+class b=c,case
+if true{
+func a{{func a{
+{
+func b
+let:b
+struct B{
+if true{class c{
+{
+func a}struct S
+class
+var f{struct S
+struct Q<T{
+class A{func a<T enum S<T where g:d
+struct X<T:T.a
+class A{
+protocol a<T where g:{class d:d} Int] g mb:{func g:e{
+enum S<T{func b<T where h.g=a{
+let f{class d:e{}struct S<T where g: f {class b{class d<
+let f{class d
+func a{class d
+class a{
+enum S<I func a{class a}struct B{class A{{{class b<T where h.g=a{
diff --git a/validation-test/compiler_crashers/27989-swift-typechecker-lookupmember.swift b/validation-test/compiler_crashers/27989-swift-typechecker-lookupmember.swift
new file mode 100644
index 0000000000000..dbdc96e7b74bf
--- /dev/null
+++ b/validation-test/compiler_crashers/27989-swift-typechecker-lookupmember.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import a}class A{class b:b}struct X<T:T.a
diff --git a/validation-test/compiler_crashers/27990-swift-constraints-constraintsystem-computeassigndesttype.swift b/validation-test/compiler_crashers/27990-swift-constraints-constraintsystem-computeassigndesttype.swift
new file mode 100644
index 0000000000000..750e24bc2a41d
--- /dev/null
+++ b/validation-test/compiler_crashers/27990-swift-constraints-constraintsystem-computeassigndesttype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b{func a{b=b}var f{class A{class b{class A{struct X<T:T.f
diff --git a/validation-test/compiler_crashers/27991-void.swift b/validation-test/compiler_crashers/27991-void.swift
new file mode 100644
index 0000000000000..0d69107221e2e
--- /dev/null
+++ b/validation-test/compiler_crashers/27991-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S{class A{struct c{class T{class C{}}}}}struct S<f:f.c
diff --git a/validation-test/compiler_crashers/27992-swift-createimplicitconstructor.swift b/validation-test/compiler_crashers/27992-swift-createimplicitconstructor.swift
new file mode 100644
index 0000000000000..e776f48130823
--- /dev/null
+++ b/validation-test/compiler_crashers/27992-swift-createimplicitconstructor.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d<T{func a{class d<h{{}struct Q{class b{struct B{class b{var b{let:{let:b
+enum b<T where h.g=a{
+}}}}struct S
diff --git a/validation-test/compiler_crashers/27993-swift-parser-parsedeclfunc.swift b/validation-test/compiler_crashers/27993-swift-parser-parsedeclfunc.swift
new file mode 100644
index 0000000000000..cbbc602f597ca
--- /dev/null
+++ b/validation-test/compiler_crashers/27993-swift-parser-parsedeclfunc.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{struct X<T:T.a}{func}
diff --git a/validation-test/compiler_crashers/27995-swift-constraints-constraintsystem-simplifyconstructionconstraint.swift b/validation-test/compiler_crashers/27995-swift-constraints-constraintsystem-simplifyconstructionconstraint.swift
new file mode 100644
index 0000000000000..a56232f14dd11
--- /dev/null
+++ b/validation-test/compiler_crashers/27995-swift-constraints-constraintsystem-simplifyconstructionconstraint.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class c{struct S<T where g:A{class B{let a=1 struct a{var _=c{
diff --git a/validation-test/compiler_crashers/27996-llvm-ondiskchainedhashtable-swift-modulefile-decltableinfo-find.swift b/validation-test/compiler_crashers/27996-llvm-ondiskchainedhashtable-swift-modulefile-decltableinfo-find.swift
new file mode 100644
index 0000000000000..fcb3f1a328c32
--- /dev/null
+++ b/validation-test/compiler_crashers/27996-llvm-ondiskchainedhashtable-swift-modulefile-decltableinfo-find.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b<T where h=a{class d<h{let a{func b:fa{class b:d
diff --git a/validation-test/compiler_crashers/27997-swift-typechecker-computeaccessibility.swift b/validation-test/compiler_crashers/27997-swift-typechecker-computeaccessibility.swift
new file mode 100644
index 0000000000000..156b35b644d0d
--- /dev/null
+++ b/validation-test/compiler_crashers/27997-swift-typechecker-computeaccessibility.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{struct Q{class A{class a{var b{struct X<T:T.a}enum a{{}class A{class a func a
diff --git a/validation-test/compiler_crashers/27998-swift-parser-consumetoken.swift b/validation-test/compiler_crashers/27998-swift-parser-consumetoken.swift
new file mode 100644
index 0000000000000..d6a5160d9ff02
--- /dev/null
+++ b/validation-test/compiler_crashers/27998-swift-parser-consumetoken.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import S}if{class a{struct X<T:T.a
+class B
diff --git a/validation-test/compiler_crashers/27999-swift-constraints-solution-solution.swift b/validation-test/compiler_crashers/27999-swift-constraints-solution-solution.swift
new file mode 100644
index 0000000000000..b28ed2b71466a
--- /dev/null
+++ b/validation-test/compiler_crashers/27999-swift-constraints-solution-solution.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import a enum b}b}struct Q{let a{var f{class B{class A{enum S{class b{struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28000-swift-astcontext-getimplicitlyunwrappedoptionaldecl.swift b/validation-test/compiler_crashers/28000-swift-astcontext-getimplicitlyunwrappedoptionaldecl.swift
new file mode 100644
index 0000000000000..d2a045e9cff8e
--- /dev/null
+++ b/validation-test/compiler_crashers/28000-swift-astcontext-getimplicitlyunwrappedoptionaldecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{{let:{struct X<T:T.a}}if{enum S<T{func b
diff --git a/validation-test/compiler_crashers/28001-swift-parser-parsetypesimple.swift b/validation-test/compiler_crashers/28001-swift-parser-parsetypesimple.swift
new file mode 100644
index 0000000000000..a71c609794d47
--- /dev/null
+++ b/validation-test/compiler_crashers/28001-swift-parser-parsetypesimple.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct X<T:T.a
+class B{typealias F=
diff --git a/validation-test/compiler_crashers/28002-swift-parser-parsebraceitems.swift b/validation-test/compiler_crashers/28002-swift-parser-parsebraceitems.swift
new file mode 100644
index 0000000000000..35edbd86b0a7e
--- /dev/null
+++ b/validation-test/compiler_crashers/28002-swift-parser-parsebraceitems.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{func p{struct X<T:T.b}}
diff --git a/validation-test/compiler_crashers/28003-swift-constraints-constraintsystem-recordfix.swift b/validation-test/compiler_crashers/28003-swift-constraints-constraintsystem-recordfix.swift
new file mode 100644
index 0000000000000..ca1a68cb51f31
--- /dev/null
+++ b/validation-test/compiler_crashers/28003-swift-constraints-constraintsystem-recordfix.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import d{{class a{class A{
+enum a<T where g:a
+struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28004-swift-parser-parseexprsequence.swift b/validation-test/compiler_crashers/28004-swift-parser-parseexprsequence.swift
new file mode 100644
index 0000000000000..ccc8be89c3495
--- /dev/null
+++ b/validation-test/compiler_crashers/28004-swift-parser-parseexprsequence.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{struct X<T:T.a
+var _=}
diff --git a/validation-test/compiler_crashers/28005-swift-constraints-constraintgraphnode-getadjacency.swift b/validation-test/compiler_crashers/28005-swift-constraints-constraintgraphnode-getadjacency.swift
new file mode 100644
index 0000000000000..a026a24cff1b6
--- /dev/null
+++ b/validation-test/compiler_crashers/28005-swift-constraints-constraintgraphnode-getadjacency.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{class A{{}var _=Int{func T{struct e{enum b{struct B{class b{class a{func a<f:f.c
diff --git a/validation-test/compiler_crashers/28006-swift-typechecker-resolveidentifiertype.swift b/validation-test/compiler_crashers/28006-swift-typechecker-resolveidentifiertype.swift
new file mode 100644
index 0000000000000..b165f574ccae8
--- /dev/null
+++ b/validation-test/compiler_crashers/28006-swift-typechecker-resolveidentifiertype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum S<T where g:A{class A{let a={func f{{struct Q{class b{func e(e
diff --git a/validation-test/compiler_crashers/28007-swift-scopeinfo-addtoscope.swift b/validation-test/compiler_crashers/28007-swift-scopeinfo-addtoscope.swift
new file mode 100644
index 0000000000000..d337614e3191d
--- /dev/null
+++ b/validation-test/compiler_crashers/28007-swift-scopeinfo-addtoscope.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<f:f.c>V{class b}
diff --git a/validation-test/compiler_crashers/28008-swift-builtinunit-lookupcache-lookupvalue.swift b/validation-test/compiler_crashers/28008-swift-builtinunit-lookupcache-lookupvalue.swift
new file mode 100644
index 0000000000000..4f23b6292ffc8
--- /dev/null
+++ b/validation-test/compiler_crashers/28008-swift-builtinunit-lookupcache-lookupvalue.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+true
+let a={s:{
+protocol P{
+struct c<f:f.c
+func a<T:c
diff --git a/validation-test/compiler_crashers/28009-swift-parser-parsedeclenum.swift b/validation-test/compiler_crashers/28009-swift-parser-parsedeclenum.swift
new file mode 100644
index 0000000000000..3459a305faf02
--- /dev/null
+++ b/validation-test/compiler_crashers/28009-swift-parser-parsedeclenum.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a<T:T.h{enum}
diff --git a/validation-test/compiler_crashers/28010-swift-typechecker-typecheckdecl.swift b/validation-test/compiler_crashers/28010-swift-typechecker-typecheckdecl.swift
new file mode 100644
index 0000000000000..102ac1070e602
--- /dev/null
+++ b/validation-test/compiler_crashers/28010-swift-typechecker-typecheckdecl.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class A{struct B<T where g:T{
+class b
+{
+class t
+class d
+var d={
diff --git a/validation-test/compiler_crashers/28011-swift-typebase-getcanonicaltype.swift b/validation-test/compiler_crashers/28011-swift-typebase-getcanonicaltype.swift
new file mode 100644
index 0000000000000..5713a898662c8
--- /dev/null
+++ b/validation-test/compiler_crashers/28011-swift-typebase-getcanonicaltype.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T where g:a{func f{
+{enum e{struct c{
+class B<a{
+let t:T.C
+let:T.E
diff --git a/validation-test/compiler_crashers/28012-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/28012-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..6977db4e41a5a
--- /dev/null
+++ b/validation-test/compiler_crashers/28012-swift-inflightdiagnostic.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let c{class b{func c<f:f.c
diff --git a/validation-test/compiler_crashers/28013-std-function-func-swift-archetypebuilder-visitinherited.swift b/validation-test/compiler_crashers/28013-std-function-func-swift-archetypebuilder-visitinherited.swift
new file mode 100644
index 0000000000000..43599d7a4b209
--- /dev/null
+++ b/validation-test/compiler_crashers/28013-std-function-func-swift-archetypebuilder-visitinherited.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{protocol A{protocol A{{{{}}}}}class S<T{func a<h{func b<T where h.g=a{}}protocol a{func f(t:A
diff --git a/validation-test/compiler_crashers/28014-swift-decl-walk.swift b/validation-test/compiler_crashers/28014-swift-decl-walk.swift
new file mode 100644
index 0000000000000..f4fe45e3ed00b
--- /dev/null
+++ b/validation-test/compiler_crashers/28014-swift-decl-walk.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b{struct T{class A{struct S{struct c{struct d{class a{class A{class a{deinit{protocol A{func c<f:f.U
diff --git a/validation-test/compiler_crashers/28015-swift-constraints-constraintgraph-computeconnectedcomponents.swift b/validation-test/compiler_crashers/28015-swift-constraints-constraintgraph-computeconnectedcomponents.swift
new file mode 100644
index 0000000000000..bb286d798a81f
--- /dev/null
+++ b/validation-test/compiler_crashers/28015-swift-constraints-constraintgraph-computeconnectedcomponents.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+var f=B}class B
+let c{struct Q{{}class T{var f=b<T
+func b<f:f.a
diff --git a/validation-test/compiler_crashers/28016-swift-typebase-getcanonicaltype.swift b/validation-test/compiler_crashers/28016-swift-typebase-getcanonicaltype.swift
new file mode 100644
index 0000000000000..f36d5b41939ef
--- /dev/null
+++ b/validation-test/compiler_crashers/28016-swift-typebase-getcanonicaltype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+if{enum b<T{class b{class a}class b<f:f.c
diff --git a/validation-test/compiler_crashers/28017-swift-protocoldecl-existentialtypesupportedslow.swift b/validation-test/compiler_crashers/28017-swift-protocoldecl-existentialtypesupportedslow.swift
new file mode 100644
index 0000000000000..aec2dec733af0
--- /dev/null
+++ b/validation-test/compiler_crashers/28017-swift-protocoldecl-existentialtypesupportedslow.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum S<T where g:e{class T{let a={protocol P{func f:P
diff --git a/validation-test/compiler_crashers/28018-swift-valuedecl-overwritetype.swift b/validation-test/compiler_crashers/28018-swift-valuedecl-overwritetype.swift
new file mode 100644
index 0000000000000..f39c5bea78da6
--- /dev/null
+++ b/validation-test/compiler_crashers/28018-swift-valuedecl-overwritetype.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let:{class c{class S{struct Q{class c{let f=1
+var f=}}}}struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28019-swift-typechecker-checkdeclarationavailability.swift b/validation-test/compiler_crashers/28019-swift-typechecker-checkdeclarationavailability.swift
new file mode 100644
index 0000000000000..43fbb9d5f7285
--- /dev/null
+++ b/validation-test/compiler_crashers/28019-swift-typechecker-checkdeclarationavailability.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{
+class d{
+class a<T where b:A{
+class a{class b:a
+var b={{}class b{
+var a:T
diff --git a/validation-test/compiler_crashers/28020-llvm-smallvectorimpl-swift-decl-insert.swift b/validation-test/compiler_crashers/28020-llvm-smallvectorimpl-swift-decl-insert.swift
new file mode 100644
index 0000000000000..7653b996ca0f9
--- /dev/null
+++ b/validation-test/compiler_crashers/28020-llvm-smallvectorimpl-swift-decl-insert.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct A{let a{class a{var b{class A{class T{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28021-swift-decl-getrawcomment.swift b/validation-test/compiler_crashers/28021-swift-decl-getrawcomment.swift
new file mode 100644
index 0000000000000..26dd2ee7de393
--- /dev/null
+++ b/validation-test/compiler_crashers/28021-swift-decl-getrawcomment.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{enum B:a=class b{struct S<B{struct B<b{enum B{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28022-swift-typechecker-diagnoseexplicitunavailability.swift b/validation-test/compiler_crashers/28022-swift-typechecker-diagnoseexplicitunavailability.swift
new file mode 100644
index 0000000000000..318a90223ef35
--- /dev/null
+++ b/validation-test/compiler_crashers/28022-swift-typechecker-diagnoseexplicitunavailability.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{<T
+var b{class d{
+deinit{struct b{{{}}
+class T{enum B{enum A{class b<f:f.a
diff --git a/validation-test/compiler_crashers/28023-swift-typechecker-diagnoseexplicitunavailability.swift b/validation-test/compiler_crashers/28023-swift-typechecker-diagnoseexplicitunavailability.swift
new file mode 100644
index 0000000000000..5688895a99837
--- /dev/null
+++ b/validation-test/compiler_crashers/28023-swift-typechecker-diagnoseexplicitunavailability.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var b{println class a{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28024-swift-constraints-constraintlocatorbuilder-trysimplifytoexpr.swift b/validation-test/compiler_crashers/28024-swift-constraints-constraintlocatorbuilder-trysimplifytoexpr.swift
new file mode 100644
index 0000000000000..f9b5af9117002
--- /dev/null
+++ b/validation-test/compiler_crashers/28024-swift-constraints-constraintlocatorbuilder-trysimplifytoexpr.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let:{{class B{struct S{let b=[Void{func a{struct Q{class d{struct S{class a{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28025-swift-markasobjc.swift b/validation-test/compiler_crashers/28025-swift-markasobjc.swift
new file mode 100644
index 0000000000000..0b7e1b685bc20
--- /dev/null
+++ b/validation-test/compiler_crashers/28025-swift-markasobjc.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{class B<T where g:S{class A:OptionSetType{let rawValue=0
diff --git a/validation-test/compiler_crashers/28026-swift-protocolcompositiontype-build.swift b/validation-test/compiler_crashers/28026-swift-protocolcompositiontype-build.swift
new file mode 100644
index 0000000000000..1d933131f2ad9
--- /dev/null
+++ b/validation-test/compiler_crashers/28026-swift-protocolcompositiontype-build.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+<Any){struct a{class B{struct g<T{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28027-swift-typebase-getmembersubstitutions.swift b/validation-test/compiler_crashers/28027-swift-typebase-getmembersubstitutions.swift
new file mode 100644
index 0000000000000..0453acf311010
--- /dev/null
+++ b/validation-test/compiler_crashers/28027-swift-typebase-getmembersubstitutions.swift
@@ -0,0 +1,41 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func p{b
+func
+class A{struct A{ {} {}enum A{enum A{struct Q {:enum STB{{::{
+{
+}
+}}
+class B<T where T:n{<T :
+enum S<T= {
+class A {
+enum b{var _=B struct B class B
+a {
+{
+}
+{
+{
+: {
+{ {
+p{
+{
+{
+{
+( [
+{ {
+{{
+(
+{ {
+}b {{ {{}
+{
+{
+{
+{
+{ {
+{ {
+{:=B
+structclaslass B<: <{ :
diff --git a/validation-test/compiler_crashers/28028-swift-astcontext-diagnoseunintendedobjcmethodoverrides.swift b/validation-test/compiler_crashers/28028-swift-astcontext-diagnoseunintendedobjcmethodoverrides.swift
new file mode 100644
index 0000000000000..4a8fa2c63988f
--- /dev/null
+++ b/validation-test/compiler_crashers/28028-swift-astcontext-diagnoseunintendedobjcmethodoverrides.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let }typealias d:<:a{{_?class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28029-swift-constraints-constraintsystem-performmemberlookup.swift b/validation-test/compiler_crashers/28029-swift-constraints-constraintsystem-performmemberlookup.swift
new file mode 100644
index 0000000000000..a39def08ac5fd
--- /dev/null
+++ b/validation-test/compiler_crashers/28029-swift-constraints-constraintsystem-performmemberlookup.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum b<T{func d{class A{struct d{enum A{
+class b{var _=B<T struct B class B
+var:{{
+class B<T where B:P{
+class b<T{struct b{var _=B<T struct B class B
diff --git a/validation-test/compiler_crashers/28031-swift-clangimporter-lookupvalue.swift b/validation-test/compiler_crashers/28031-swift-clangimporter-lookupvalue.swift
new file mode 100644
index 0000000000000..57a1dd0f5909d
--- /dev/null
+++ b/validation-test/compiler_crashers/28031-swift-clangimporter-lookupvalue.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b{var _=B<b}{class B<T where T:A{class A<T{enum A{class a{enum b{var _=B<T struct B class B
diff --git a/validation-test/compiler_crashers/28032-swift-typechecker-computecaptures.swift b/validation-test/compiler_crashers/28032-swift-typechecker-computecaptures.swift
new file mode 100644
index 0000000000000..7f02d8132c151
--- /dev/null
+++ b/validation-test/compiler_crashers/28032-swift-typechecker-computecaptures.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{func a{{f,{func b={{}}}}}}}{class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28033-swift-configureconstructortype.swift b/validation-test/compiler_crashers/28033-swift-configureconstructortype.swift
new file mode 100644
index 0000000000000..9c45a73f3eafa
--- /dev/null
+++ b/validation-test/compiler_crashers/28033-swift-configureconstructortype.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func c{
+class a{{{{{
+}}}}class
+S{
+class a{class S{func b{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28034-swift-constraints-constraintsystem-diagnosefailureforexpr.swift b/validation-test/compiler_crashers/28034-swift-constraints-constraintsystem-diagnosefailureforexpr.swift
new file mode 100644
index 0000000000000..30f96d3840515
--- /dev/null
+++ b/validation-test/compiler_crashers/28034-swift-constraints-constraintsystem-diagnosefailureforexpr.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{map enum w{class d{enum S{class a{func f<T:T.B
diff --git a/validation-test/compiler_crashers/28035-swift-archetypebuilder-getallarchetypes.swift b/validation-test/compiler_crashers/28035-swift-archetypebuilder-getallarchetypes.swift
new file mode 100644
index 0000000000000..61d4d330f42c0
--- /dev/null
+++ b/validation-test/compiler_crashers/28035-swift-archetypebuilder-getallarchetypes.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+if{class a{{{}}class a{{}enum S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28037-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/28037-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..9af26715e9831
--- /dev/null
+++ b/validation-test/compiler_crashers/28037-swift-inflightdiagnostic.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{enum B{enum A{class b<f:f.c{}}{{{{{{{{{{{{{{}{{{}{[([{{{{}{}}{{{{{{{{{{{{{{"
diff --git a/validation-test/compiler_crashers/28038-swift-parser-parsetype.swift b/validation-test/compiler_crashers/28038-swift-parser-parsetype.swift
new file mode 100644
index 0000000000000..8537eca913e64
--- /dev/null
+++ b/validation-test/compiler_crashers/28038-swift-parser-parsetype.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func f<T:T.e
+if{let:}
diff --git a/validation-test/compiler_crashers/28039-swift-constraints-solution-computesubstitutions.swift b/validation-test/compiler_crashers/28039-swift-constraints-solution-computesubstitutions.swift
new file mode 100644
index 0000000000000..23565eeb0db31
--- /dev/null
+++ b/validation-test/compiler_crashers/28039-swift-constraints-solution-computesubstitutions.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{d<:func a{enum b{struct S<a{enum b{struct S<T{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28040-swift-genericparamlist-addnestedarchetypes.swift b/validation-test/compiler_crashers/28040-swift-genericparamlist-addnestedarchetypes.swift
new file mode 100644
index 0000000000000..f4cdfa2a6b809
--- /dev/null
+++ b/validation-test/compiler_crashers/28040-swift-genericparamlist-addnestedarchetypes.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+struct b<T where h:A{enum A{
+struct D{class a{
+class b
+class A{
+class A:b
diff --git a/validation-test/compiler_crashers/28041-swift-typechecker-lookupunqualified.swift b/validation-test/compiler_crashers/28041-swift-typechecker-lookupunqualified.swift
new file mode 100644
index 0000000000000..ec8cc097fe4e7
--- /dev/null
+++ b/validation-test/compiler_crashers/28041-swift-typechecker-lookupunqualified.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{{map($0
diff --git a/validation-test/compiler_crashers/28042-void.swift b/validation-test/compiler_crashers/28042-void.swift
new file mode 100644
index 0000000000000..dfb1ce5540017
--- /dev/null
+++ b/validation-test/compiler_crashers/28042-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{struct S<T{func a<h{func b<T where h.g=a{}}struct c{{{}}struct Q{struct Q{struct c{protocol P
diff --git a/validation-test/compiler_crashers/28044-swift-completegenerictyperesolver-resolvegenerictypeparamtype.swift b/validation-test/compiler_crashers/28044-swift-completegenerictyperesolver-resolvegenerictypeparamtype.swift
new file mode 100644
index 0000000000000..1412155ebf456
--- /dev/null
+++ b/validation-test/compiler_crashers/28044-swift-completegenerictyperesolver-resolvegenerictypeparamtype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct Q<T{func a{if{protocol P{{{}}func b:T}}}class S{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28045-swift-typechecker-typecheckpatternbinding.swift b/validation-test/compiler_crashers/28045-swift-typechecker-typecheckpatternbinding.swift
new file mode 100644
index 0000000000000..99b18118f53d0
--- /dev/null
+++ b/validation-test/compiler_crashers/28045-swift-typechecker-typecheckpatternbinding.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func f{class a{
+class b
+class B{
+struct B{
+struct S
+{class h{
+class B{let l=b{let a{
+func g<T:T.e
diff --git a/validation-test/compiler_crashers/28046-swift-typechecker-substituteinputsugartypeforresult.swift b/validation-test/compiler_crashers/28046-swift-typechecker-substituteinputsugartypeforresult.swift
new file mode 100644
index 0000000000000..eef7333834c9c
--- /dev/null
+++ b/validation-test/compiler_crashers/28046-swift-typechecker-substituteinputsugartypeforresult.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{[{func a{class A<T where g:d{class a{func a{{{({a{
diff --git a/validation-test/compiler_crashers/28047-swift-constraints-constraintsystem-recordfix.swift b/validation-test/compiler_crashers/28047-swift-constraints-constraintsystem-recordfix.swift
new file mode 100644
index 0000000000000..8da9cc72c5de0
--- /dev/null
+++ b/validation-test/compiler_crashers/28047-swift-constraints-constraintsystem-recordfix.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d<T where B:f{class n{func f{class A{var d{{A?f}}}class A
diff --git a/validation-test/compiler_crashers/28048-swift-astcontext-getspecializedconformance.swift b/validation-test/compiler_crashers/28048-swift-astcontext-getspecializedconformance.swift
new file mode 100644
index 0000000000000..cce73329007b4
--- /dev/null
+++ b/validation-test/compiler_crashers/28048-swift-astcontext-getspecializedconformance.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum a
+class b{var d:a{}
+}func a{class a{enum a<d{struct S{struct Q<d{enum B{enum A{class b<f:f.
+b
diff --git a/validation-test/compiler_crashers/28050-swift-abstractfunctiondecl-setgenericparams.swift b/validation-test/compiler_crashers/28050-swift-abstractfunctiondecl-setgenericparams.swift
new file mode 100644
index 0000000000000..c55f102e878d4
--- /dev/null
+++ b/validation-test/compiler_crashers/28050-swift-abstractfunctiondecl-setgenericparams.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B<T where H: T{
+enum S<B {{
+{}}
+enum e
+struct Q{var b{
+if true as a{class b T {}
+var b{var f=e
diff --git a/validation-test/compiler_crashers/28051-swift-parser-parseexprimpl.swift b/validation-test/compiler_crashers/28051-swift-parser-parseexprimpl.swift
new file mode 100644
index 0000000000000..ec4ab79b0a6f1
--- /dev/null
+++ b/validation-test/compiler_crashers/28051-swift-parser-parseexprimpl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{b{{{}{{}}}}{{a{}}typealias{enum B{enum A{class b<f:f.c{{{{}}{}}let a{{{}}let A{if{a}}
diff --git a/validation-test/compiler_crashers/28052-swift-moduledecl-lookupvalue.swift b/validation-test/compiler_crashers/28052-swift-moduledecl-lookupvalue.swift
new file mode 100644
index 0000000000000..b238dc39f17df
--- /dev/null
+++ b/validation-test/compiler_crashers/28052-swift-moduledecl-lookupvalue.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T{
+func f<T
+{enum b{
+let a=0
+}
+struct c{
+{
+}
+struct c<f where g:a
+func g<f where T.B:a
diff --git a/validation-test/compiler_crashers/28053-swift-parser-parsedeclvar.swift b/validation-test/compiler_crashers/28053-swift-parser-parsedeclvar.swift
new file mode 100644
index 0000000000000..0c87c297f6883
--- /dev/null
+++ b/validation-test/compiler_crashers/28053-swift-parser-parsedeclvar.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func g<T:T.i{}{let}
diff --git a/validation-test/compiler_crashers/28054-ldstninstinfo.swift b/validation-test/compiler_crashers/28054-ldstninstinfo.swift
new file mode 100644
index 0000000000000..70926e65ad008
--- /dev/null
+++ b/validation-test/compiler_crashers/28054-ldstninstinfo.swift
@@ -0,0 +1,20 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+typealias e:a{
+protocol c{{func b{varb
+{{classA{{
+}
+var a{func a{enum S<T }{class A{}let a{
+"
+class
+protocol a
+}
+class A{let a
+enum B<f:f.c
+func a{struct S<a{
+a }
+{struct d<S<T where I:a {class A{func a<a{{ enum B{{func a{
diff --git a/validation-test/compiler_crashers/28055-swift-parser-parsegetsetimpl.swift b/validation-test/compiler_crashers/28055-swift-parser-parsegetsetimpl.swift
new file mode 100644
index 0000000000000..538224c0d1f05
--- /dev/null
+++ b/validation-test/compiler_crashers/28055-swift-parser-parsegetsetimpl.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{enum B{enum A{class b<f:f.c
+struct i{
+let A{var d{}}
diff --git a/validation-test/compiler_crashers/28056-swift-valuedecl-settype.swift b/validation-test/compiler_crashers/28056-swift-valuedecl-settype.swift
new file mode 100644
index 0000000000000..721328320a04e
--- /dev/null
+++ b/validation-test/compiler_crashers/28056-swift-valuedecl-settype.swift
@@ -0,0 +1,21 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+if true{
+let a{
+{
+class A{
+struct B<T where g:C{{
+}
+struct c{
+struct c{
+class A{
+class a
+class A{
+class A{
+class B{
+struct B{
+class B:a
diff --git a/validation-test/compiler_crashers/28057-swift-modulefile-declcommenttableinfo-readdata.swift b/validation-test/compiler_crashers/28057-swift-modulefile-declcommenttableinfo-readdata.swift
new file mode 100644
index 0000000000000..4236fc8895ca2
--- /dev/null
+++ b/validation-test/compiler_crashers/28057-swift-modulefile-declcommenttableinfo-readdata.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{
+enum b:A
+func a{
+protocol B{
+func f<T where g=e
+func g:T.C
diff --git a/validation-test/compiler_crashers/28058-swift-lexer-leximpl.swift b/validation-test/compiler_crashers/28058-swift-lexer-leximpl.swift
new file mode 100644
index 0000000000000..67552950f7f61
--- /dev/null
+++ b/validation-test/compiler_crashers/28058-swift-lexer-leximpl.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+for c{}struct B<f where g:C{
+class A{{}struct c{
+class B:A
+class A
diff --git a/validation-test/compiler_crashers/28059-swift-conformancelookuptable-updatelookuptable.swift b/validation-test/compiler_crashers/28059-swift-conformancelookuptable-updatelookuptable.swift
new file mode 100644
index 0000000000000..76ccda7716c93
--- /dev/null
+++ b/validation-test/compiler_crashers/28059-swift-conformancelookuptable-updatelookuptable.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A
+class B:A
+struct d<T where e=p{enum e:T.B
diff --git a/validation-test/compiler_crashers/28060-std-function-func.swift b/validation-test/compiler_crashers/28060-std-function-func.swift
new file mode 100644
index 0000000000000..e24e14b5d11bc
--- /dev/null
+++ b/validation-test/compiler_crashers/28060-std-function-func.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a<T{enum b{
+class B{
+enum b:C
+func c{
+class A{{
+}
+func f
+func f<I:T.h
diff --git a/validation-test/compiler_crashers/28061-swift-nominaltypedecl-getdeclaredtypeincontext.swift b/validation-test/compiler_crashers/28061-swift-nominaltypedecl-getdeclaredtypeincontext.swift
new file mode 100644
index 0000000000000..26f4caa0da68f
--- /dev/null
+++ b/validation-test/compiler_crashers/28061-swift-nominaltypedecl-getdeclaredtypeincontext.swift
@@ -0,0 +1,18 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import r
+func f<T{enum B<h where T.g=e}
+class A{
+}
+class A{
+class B
+struct d{
+struct S{
+struct c{
+class a{
+enum b{
+enum S
diff --git a/validation-test/compiler_crashers/28062-swift-classdecl-checkobjcancestry.swift b/validation-test/compiler_crashers/28062-swift-classdecl-checkobjcancestry.swift
new file mode 100644
index 0000000000000..8702e2a44d78c
--- /dev/null
+++ b/validation-test/compiler_crashers/28062-swift-classdecl-checkobjcancestry.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum b{func g:a
+func a{}
+class B
+class a{
+}
+class B<T:T.a
diff --git a/validation-test/compiler_crashers/28064-swift-stmtconditionelement-walk.swift b/validation-test/compiler_crashers/28064-swift-stmtconditionelement-walk.swift
new file mode 100644
index 0000000000000..c2b269e942772
--- /dev/null
+++ b/validation-test/compiler_crashers/28064-swift-stmtconditionelement-walk.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d{enum B{enum A{class b<f:f.a{class A{func b{d{enum e{var e{{{}}enum B{{}class n{let:{{{}}class a{init(){{{}class A{class d{struct d{enum b{struct D{class d{{}enum b{class A{func a{class B{let a{{if{
diff --git a/validation-test/compiler_crashers/28065-swift-constraints-constraintsystem-mergeequivalenceclasses.swift b/validation-test/compiler_crashers/28065-swift-constraints-constraintsystem-mergeequivalenceclasses.swift
new file mode 100644
index 0000000000000..227c1d3729383
--- /dev/null
+++ b/validation-test/compiler_crashers/28065-swift-constraints-constraintsystem-mergeequivalenceclasses.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{deinit{{}class U{let f=a{let:{{class d{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28066-swift-parentype-get.swift b/validation-test/compiler_crashers/28066-swift-parentype-get.swift
new file mode 100644
index 0000000000000..01ebc23ddb9a6
--- /dev/null
+++ b/validation-test/compiler_crashers/28066-swift-parentype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{class n{func a(((Any}}enum S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28067-no-stacktrace.swift b/validation-test/compiler_crashers/28067-no-stacktrace.swift
new file mode 100644
index 0000000000000..8a05df288f46e
--- /dev/null
+++ b/validation-test/compiler_crashers/28067-no-stacktrace.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+b{}}}e : e var _= 0{}}:e f T> var : >(}{class a{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28068-swift-declcontext-getlocalconformances.swift b/validation-test/compiler_crashers/28068-swift-declcontext-getlocalconformances.swift
new file mode 100644
index 0000000000000..87a5ebf9d35be
--- /dev/null
+++ b/validation-test/compiler_crashers/28068-swift-declcontext-getlocalconformances.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{class B}enum b{class a{struct Q<T{enum B{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28069-swift-nominaltypedecl-classifyasoptionaltype.swift b/validation-test/compiler_crashers/28069-swift-nominaltypedecl-classifyasoptionaltype.swift
new file mode 100644
index 0000000000000..b143e62dfedda
--- /dev/null
+++ b/validation-test/compiler_crashers/28069-swift-nominaltypedecl-classifyasoptionaltype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b{struct S{struct d{struct B{class A{enum B<T{func c{if{func f<e:T.A
diff --git a/validation-test/compiler_crashers/28070-swift-lexer-diagnose.swift b/validation-test/compiler_crashers/28070-swift-lexer-diagnose.swift
new file mode 100644
index 0000000000000..64b2606478941
--- /dev/null
+++ b/validation-test/compiler_crashers/28070-swift-lexer-diagnose.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct X<T:T.a{{{{}(({{{{{{{{{{{{{{{{{{{. ={
diff --git a/validation-test/compiler_crashers/28071-swift-clangimporter-implementation-importdeclandcacheimpl.swift b/validation-test/compiler_crashers/28071-swift-clangimporter-implementation-importdeclandcacheimpl.swift
new file mode 100644
index 0000000000000..f4dc8ca0d495e
--- /dev/null
+++ b/validation-test/compiler_crashers/28071-swift-clangimporter-implementation-importdeclandcacheimpl.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import Foundation
+{struct B<T where h:A{{}
+class A{
+class A{
+class a{class c
+struct B<T where B:d{
+{
+}
+var b=[c<T:a{struct
diff --git a/validation-test/compiler_crashers/28072-swift-typechecker-buildrefexpr.swift b/validation-test/compiler_crashers/28072-swift-typechecker-buildrefexpr.swift
new file mode 100644
index 0000000000000..0e3f72df38131
--- /dev/null
+++ b/validation-test/compiler_crashers/28072-swift-typechecker-buildrefexpr.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let e{if{struct S<T where k:c{class A{class D{let t:Int=e
diff --git a/validation-test/compiler_crashers/28073-swift-parser-parsestmt.swift b/validation-test/compiler_crashers/28073-swift-parser-parsestmt.swift
new file mode 100644
index 0000000000000..a6c9a6c76b334
--- /dev/null
+++ b/validation-test/compiler_crashers/28073-swift-parser-parsestmt.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+> T{return}{{class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28074-swift-archetypebuilder-potentialarchetype-gettype.swift b/validation-test/compiler_crashers/28074-swift-archetypebuilder-potentialarchetype-gettype.swift
new file mode 100644
index 0000000000000..efa8d3f1758d7
--- /dev/null
+++ b/validation-test/compiler_crashers/28074-swift-archetypebuilder-potentialarchetype-gettype.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B<T where k=f{
+class b<p
+class A<T where g:S{
+func b<a{b
diff --git a/validation-test/compiler_crashers/28075-swift-lexer-lexstringliteral.swift b/validation-test/compiler_crashers/28075-swift-lexer-lexstringliteral.swift
new file mode 100644
index 0000000000000..f75e51738b9c7
--- /dev/null
+++ b/validation-test/compiler_crashers/28075-swift-lexer-lexstringliteral.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{({{{{(""class S<T{func a<h{func b<T where h.g=a{{{{{{{"
diff --git a/validation-test/compiler_crashers/28076-llvm-foldingset-swift-tupletype-getnodeprofile.swift b/validation-test/compiler_crashers/28076-llvm-foldingset-swift-tupletype-getnodeprofile.swift
new file mode 100644
index 0000000000000..e9be0bcc969fc
--- /dev/null
+++ b/validation-test/compiler_crashers/28076-llvm-foldingset-swift-tupletype-getnodeprofile.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class A{
+class A{class B
+let a{{{class a
+{
+struct B<T:T.h.e
diff --git a/validation-test/compiler_crashers/28077-swift-parser-parsedeclsubscript.swift b/validation-test/compiler_crashers/28077-swift-parser-parsedeclsubscript.swift
new file mode 100644
index 0000000000000..e96a5c3aa7d86
--- /dev/null
+++ b/validation-test/compiler_crashers/28077-swift-parser-parsedeclsubscript.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{subscript<class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28078-swift-archetypebuilder-inferrequirementswalker-walktotypepost.swift b/validation-test/compiler_crashers/28078-swift-archetypebuilder-inferrequirementswalker-walktotypepost.swift
new file mode 100644
index 0000000000000..20723ead93c1b
--- /dev/null
+++ b/validation-test/compiler_crashers/28078-swift-archetypebuilder-inferrequirementswalker-walktotypepost.swift
@@ -0,0 +1,18 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var b{
+{
+{
+{
+{{
+}}}}}class S<T{func a<h{func b<T where h.g=a{}}
+}
+struct
+a{
+class b{
+struct B<T where h=f{
+func f<T
diff --git a/validation-test/compiler_crashers/28079-swift-lexer-leximpl.swift b/validation-test/compiler_crashers/28079-swift-lexer-leximpl.swift
new file mode 100644
index 0000000000000..efc450141b4e8
--- /dev/null
+++ b/validation-test/compiler_crashers/28079-swift-lexer-leximpl.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum a{class A{
+func b
+func b<T:T.g
+class S<h.=}
diff --git a/validation-test/compiler_crashers/28080-swift-parser-diagnose.swift b/validation-test/compiler_crashers/28080-swift-parser-diagnose.swift
new file mode 100644
index 0000000000000..cbb1a446ce399
--- /dev/null
+++ b/validation-test/compiler_crashers/28080-swift-parser-diagnose.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B{func a
+func a<f:f.a}{
+class b<}
diff --git a/validation-test/compiler_crashers/28081-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/28081-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..f7f76ba5cfecc
--- /dev/null
+++ b/validation-test/compiler_crashers/28081-swift-inflightdiagnostic.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{{}print{}class A{class D{struct E{class u{struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28082-bool.swift b/validation-test/compiler_crashers/28082-bool.swift
new file mode 100644
index 0000000000000..af11751c777b1
--- /dev/null
+++ b/validation-test/compiler_crashers/28082-bool.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var b{{class B{struct Q{class S<T where h:A{class a{class T:a}func b<T:a
diff --git a/validation-test/compiler_crashers/28083-swift-enumtype-get.swift b/validation-test/compiler_crashers/28083-swift-enumtype-get.swift
new file mode 100644
index 0000000000000..179487e74c1ac
--- /dev/null
+++ b/validation-test/compiler_crashers/28083-swift-enumtype-get.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B{{{}}struct S<T where g:A{var _=a<c
+class b{
+func a
+{{
+var f=b{
diff --git a/validation-test/compiler_crashers/28084-swift-modulefile-loadallmembers.swift b/validation-test/compiler_crashers/28084-swift-modulefile-loadallmembers.swift
new file mode 100644
index 0000000000000..660e9820a4b16
--- /dev/null
+++ b/validation-test/compiler_crashers/28084-swift-modulefile-loadallmembers.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A
+class d:A{let h:A
+}struct B{
+struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28085-swift-constraints-constraintsystem-simplifyrestrictedconstraint.swift b/validation-test/compiler_crashers/28085-swift-constraints-constraintsystem-simplifyrestrictedconstraint.swift
new file mode 100644
index 0000000000000..20e5b7173437a
--- /dev/null
+++ b/validation-test/compiler_crashers/28085-swift-constraints-constraintsystem-simplifyrestrictedconstraint.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B<T{func a
+class d{let e=B}struct B<T:T.b
+var f=a{
diff --git a/validation-test/compiler_crashers/28086-swift-completegenerictyperesolver-resolvedependentmembertype.swift b/validation-test/compiler_crashers/28086-swift-completegenerictyperesolver-resolvedependentmembertype.swift
new file mode 100644
index 0000000000000..74e2d54b31b76
--- /dev/null
+++ b/validation-test/compiler_crashers/28086-swift-completegenerictyperesolver-resolvedependentmembertype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let P{struct B{{{{}}}class S<T{func a<h{func b<T where h.g=a{}}{}func f:T.a
diff --git a/validation-test/compiler_crashers/28087-swift-genericsignature-profile.swift b/validation-test/compiler_crashers/28087-swift-genericsignature-profile.swift
new file mode 100644
index 0000000000000..da6776e8a2c36
--- /dev/null
+++ b/validation-test/compiler_crashers/28087-swift-genericsignature-profile.swift
@@ -0,0 +1,143 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a = {
+{
+protocol P{
+va d: A? unit(2){{}
+class b
+class b<T where k.C(x: P
+extension NSData {
+func g:A{
+}}
+"
+{
+va d}
+let a {
+func g: e where k.C(x
+class A{
+class a {
+class b
+}}}}}class S<T{func a<h{func b<T where h.g=a{}}class d
+{
+}}
+println(2){
+let t: A
+{
+func g: B{
+println(2).B : T.B :{
+class A {
+typealias e where B<f: Array<T where g: Array<T where h
+class b
+class b<T where h.B :P
+protocol c,
+{
+var d = e
+protocol P
+class b{
+func f<T:b
+protocol c,
+class b<T where f: T.h : T:T? unit(object1: P {
+}
+var A {
+let a = f {
+private let t: A? nil
+private let t: Array<I : Array<I : T) {
+class func a
+{{
+struct A {{
+class A, b }{
+class A : a = e?
+enum S<T where I.E == {
+enum S:
+{
+{
+var A : P {{{struct B<I : a = "
+func g: P
+class b<T where k.E == e?
+}}
+class a {
+"
+Void{class e?? unit("
+if true{
+println(object1: a {
+case c
+println(x
+func f<T where g: a = d:A<T where f<T where k.g =b<I : T) {
+class a<T where g<d = "
+var b }
+{class func f: d {}
+struct B<d : T.h : T.C() ?
+}}}
+private let d{
+class B<T>() -> String {
+{
+func g: Array<T where f=b<T where h.h : P
+{}
+return x: A{
+{
+}}
+class B<T.g == d<T A {struct B<I : d = e
+typealias e where I.E == e{
+class b
+struct A {
+struct A, b }}}{{
+class func unit<T where h.E == e: e?? {
+Void{
+var b<d : Any {
+class b
+( {func a<T where B:Any).E == e
+: P
+}}
+}}}}}class S<T{func a<h{func b<T where h.g=a{}}class d
+func a{}
+var d {
+class b(key: a = d}
+protocol e == e?? {
+return unit(object1: a {{
+func g: e, d : Array<T where k.E == Int
+class A {
+enum S:P{
+{
+class A, b =
+set { a = d}
+}
+protocol P {
+{
+class b<T where g: a {
+{class A : e, d = [Void{
+va d> : e, b }
+{{var d = e, b : Array<I : Array<T where k.g =b
+class A, AnyObject, d = {
+protocol c,
+func a<I : Array<T where g: B<T where g: e:T
+let a = d<T where h.E == {
+var d = e:P
+struct A : A<T where f<T) {
+class e
+struct B<T where B<T:d{
+struct B<T where g: T.map { b }
+extension NSData {
+struct Q<T
+class A : e: A<T where g: e where k.E == d:b() {
+{
+class A : A, d = "
+( {
+protocol P {
+class b: A{{
+let t: A{
+( " ""
+class B : Array<I : e where g<T where I.C("
+println(key: Array<T) -> String {
+}}}}}class S<T{func a<h{func b<T where h.g=a{}}class d
+let t: A
+func a<T where g: Array<T where g: A<T where I.C("
+class B
+let a {{
+protocol P
+typealias e where g: e {{{
+{
+class
diff --git a/validation-test/compiler_crashers/28088-swift-nominaltypedecl-markinvalidgenericsignature.swift b/validation-test/compiler_crashers/28088-swift-nominaltypedecl-markinvalidgenericsignature.swift
new file mode 100644
index 0000000000000..e26d28e190e92
--- /dev/null
+++ b/validation-test/compiler_crashers/28088-swift-nominaltypedecl-markinvalidgenericsignature.swift
@@ -0,0 +1,44 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a
+{{
+class
+a{
+let :
+{{
+{{
+{
+}
+{
+}} }
+func g{}
+func f( ) {
+class b<T where g: T>
+where {
+a c{
+}
+}
+{
+{
+{
+{
+{::
+{}} }
+{
+{
+{
+{ }}}}}}class S<T{func a<h{func b<T where h.g=a{}}
+class b{
+let:a <.={
+< where {
+e where{
+{
+func a{
+{
+{
+{
+class b
diff --git a/validation-test/compiler_crashers/28089-extractsimplefield.swift b/validation-test/compiler_crashers/28089-extractsimplefield.swift
new file mode 100644
index 0000000000000..ad9e3bd655b05
--- /dev/null
+++ b/validation-test/compiler_crashers/28089-extractsimplefield.swift
@@ -0,0 +1,18 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{
+{}struct B< k={struct B {let c{struct B{let a
+let
+{
+{ <{class {
+{}}}}}}}class a{func a<h{func b<T where h.g=a{
+var b== a{{let g{{struct d{ c
+class B{
+struct Q{struct Q< . {
+let b=b{
+e :a{
+let:e
diff --git a/validation-test/compiler_crashers/28090-bool.swift b/validation-test/compiler_crashers/28090-bool.swift
new file mode 100644
index 0000000000000..279daac4a13a9
--- /dev/null
+++ b/validation-test/compiler_crashers/28090-bool.swift
@@ -0,0 +1,216 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct X<T:T.a
+func b:d
+}
+extension String{}
+class A
+class b<T where h:S{
+( "
+}
+func b
+}typealias e = object {
+{class A
+class var f = compose()init(n: At c {struct S<T B {{{class A{
+extension NSFileManager {
+var e = Dictionary<f:a
+var b<f
+class A {
+}
+struct B<{{func b{}}
+}
+var d {
+class P{class D {
+}}print{var "
+in
+typealias d
+class var a{
+func < {
+func a {
+conary<T where T. : a {{
+protocol A {
+class A : a{
+class A{
+import Foundation
+class A{
+class u{var e = object {
+{func b:T:A
+}
+in
+}
+( "
+struct E{
+}}
+struct B<T == object {
+func<T where T{
+[ {
+{
+protocol A : Any, A : a {func b:{
+class A : a {
+class A
+}
+func a {
+import Foundation
+typealias e = Dictionary<T where T: a {
+}typealias e {
+protocol a
+protocol A : a{
+struct B{class A{
+}
+class d
+}
+let h:d:A
+"
+}
+"
+class A : a {{
+protocol a{
+}
+enum S<{
+}print{
+func < {
+col A {
+}
+protocol A : e
+}}
+protocol A {{
+}
+}
+class A : A{class a{
+{}
+class A {func a {
+}}
+class P{
+extension NSFileMa}
+}
+class A : Any, A : T:T:A{
+class A {
+"
+var "
+struct c {
+struct S<I
+( "
+protocol C{
+col A : a {
+class P{
+protocol A : a {a
+struct B {
+class A {{
+( "
+class a<T where f{class A {
+protocol C{
+protocol c {
+protocol C{
+}}
+struct B{a
+let:a
+{
+func b:A{
+}struct E {enum C {
+class c{enum S<I
+class a {class u{
+( "
+class a{
+struct c {
+var b
+class var "
+class T{enum C {
+struct B
+}
+typealias f
+}print{
+typealias f:
+typealias etatic var f
+typealias etatic var f:T{
+( "
+class A {
+let h:S<T == B
+var f{
+struct B {
+typealias e = a{}}struct B<{
+}typealias d:{
+class A {
+class D {a{var d {class A{
+struct B {
+}enum b
+}}
+struct B{
+}
+"
+}
+init()
+let:S{
+var d {
+protocol a {
+}
+struct B {}
+if true{
+}
+extension NSFileMa}
+func<T where T. : A {
+}
+func a {
+class A {func b
+class A {}protocol a<{{
+struct S<T where T{
+enum a{class A
+struct B : a {var f:{
+typealias f = compose()
+typealias f = object {
+var f
+import Foundation
+typealias e = object {
+typealias e {}
+}
+protocol A {
+class A : A{
+protocol a
+class A : A : e = object {
+let h: a {a
+class D {
+class A {
+protocol a {
+}
+let:d
+class A
+class var f:{
+var d {{}
+func a {
+protocol a {
+struct B
+}
+var a
+struct S<T where T{
+struct S{}}
+extension String{
+protocol A {
+}
+struct X<T:T.a
+protocol a{
+struct S{
+func f:a
+}
+typealias f
+struct S<T B {
+}
+var b}
+protocol a : a
+typealias etatic var a
+}print{
+class var a{
+S<I
+func b{}
+struct S{
+class A : A {struct X<T:T.a
+}}
+func<T where T{
+typealias e = B
+var d {
+}
+let:A{
+extension NSFileMa}
+extension NSFileMa
diff --git a/validation-test/compiler_crashers/28091-swift-diagnosticengine-flushactivediagnostic.swift b/validation-test/compiler_crashers/28091-swift-diagnosticengine-flushactivediagnostic.swift
new file mode 100644
index 0000000000000..e51b032a5ce22
--- /dev/null
+++ b/validation-test/compiler_crashers/28091-swift-diagnosticengine-flushactivediagnostic.swift
@@ -0,0 +1,13 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var:
+{class b<b
+class A
+let c={
+class B<T where f:P{
+class
+c<a{class e:A,b
diff --git a/validation-test/compiler_crashers/28092-swift-parser-parseexpridentifier.swift b/validation-test/compiler_crashers/28092-swift-parser-parseexpridentifier.swift
new file mode 100644
index 0000000000000..ba8e804513576
--- /dev/null
+++ b/validation-test/compiler_crashers/28092-swift-parser-parseexpridentifier.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+a(a b){class b<T{func a<h{func b<T where h.b:t
diff --git a/validation-test/compiler_crashers/28093-swift-archetypetype-getnew.swift b/validation-test/compiler_crashers/28093-swift-archetypetype-getnew.swift
new file mode 100644
index 0000000000000..f98591e6cff0c
--- /dev/null
+++ b/validation-test/compiler_crashers/28093-swift-archetypetype-getnew.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct c{protocol A:a{}protocol a{{}}class P{enum S{struct S<B{struct B{struct X<T:T.a
diff --git a/validation-test/compiler_crashers/28094-swift-parser-parsetypedpattern.swift b/validation-test/compiler_crashers/28094-swift-parser-parsetypedpattern.swift
new file mode 100644
index 0000000000000..bc6258a15639d
--- /dev/null
+++ b/validation-test/compiler_crashers/28094-swift-parser-parsetypedpattern.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class t{class d<T:T.c{let}}
diff --git a/validation-test/compiler_crashers/28095-swift-parser-parsedeclstruct.swift b/validation-test/compiler_crashers/28095-swift-parser-parsedeclstruct.swift
new file mode 100644
index 0000000000000..d9f348e253bd7
--- /dev/null
+++ b/validation-test/compiler_crashers/28095-swift-parser-parsedeclstruct.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<T:T.a{struct}
diff --git a/validation-test/compiler_crashers/28096-swift-parser-parsedecl.swift b/validation-test/compiler_crashers/28096-swift-parser-parsedecl.swift
new file mode 100644
index 0000000000000..238e89e7b4e80
--- /dev/null
+++ b/validation-test/compiler_crashers/28096-swift-parser-parsedecl.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import a<
+func b{func a<T:T.c
+class d{
diff --git a/validation-test/compiler_crashers/28097-swift-astprinter-printname.swift b/validation-test/compiler_crashers/28097-swift-astprinter-printname.swift
new file mode 100644
index 0000000000000..3ee2742d90287
--- /dev/null
+++ b/validation-test/compiler_crashers/28097-swift-astprinter-printname.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d<T{class B<H{var:{Void{var P{{class d<T where H.l=a
diff --git a/validation-test/compiler_crashers/28098-swift-constraints-constraintsystem-performmemberlookup.swift b/validation-test/compiler_crashers/28098-swift-constraints-constraintsystem-performmemberlookup.swift
new file mode 100644
index 0000000000000..da58b54c25bdf
--- /dev/null
+++ b/validation-test/compiler_crashers/28098-swift-constraints-constraintsystem-performmemberlookup.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class k:CollectionType
+struct c{
+struct d<T where j:P{
+enum a{struct B{struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28099-swift-conformancelookuptable-updatelookuptable.swift b/validation-test/compiler_crashers/28099-swift-conformancelookuptable-updatelookuptable.swift
new file mode 100644
index 0000000000000..5abe52f3c1d68
--- /dev/null
+++ b/validation-test/compiler_crashers/28099-swift-conformancelookuptable-updatelookuptable.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d<T{{}
+var _{
+enum S:CollectionType{
+class a{var _=a<c
+func a<f:T.a
diff --git a/validation-test/compiler_crashers/28100-swift-tupletype-get.swift b/validation-test/compiler_crashers/28100-swift-tupletype-get.swift
new file mode 100644
index 0000000000000..c0bd9eb4985ac
--- /dev/null
+++ b/validation-test/compiler_crashers/28100-swift-tupletype-get.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{var f=1
+struct Q{class d{
+struct b{class c<T where h:A{
+class B{
+var f=B{a"
+}}struct B
diff --git a/validation-test/compiler_crashers/28101-swift-constraints-constraint-create.swift b/validation-test/compiler_crashers/28101-swift-constraints-constraint-create.swift
new file mode 100644
index 0000000000000..1a83c063df957
--- /dev/null
+++ b/validation-test/compiler_crashers/28101-swift-constraints-constraint-create.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let:{if{Void{class H{let d=a
+struct c<T where g:a{class b
+class b{let:{{b:{
diff --git a/validation-test/compiler_crashers/28102-swift-parser-parseidentifier.swift b/validation-test/compiler_crashers/28102-swift-parser-parseidentifier.swift
new file mode 100644
index 0000000000000..e63c3b6ae16e6
--- /dev/null
+++ b/validation-test/compiler_crashers/28102-swift-parser-parseidentifier.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class n{class A<T where h:a{enum e{{}class A{let a{func a<{A{
diff --git a/validation-test/compiler_crashers/28103-swift-parser-parsetoken.swift b/validation-test/compiler_crashers/28103-swift-parser-parsetoken.swift
new file mode 100644
index 0000000000000..df51e4ffb9ac8
--- /dev/null
+++ b/validation-test/compiler_crashers/28103-swift-parser-parsetoken.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import A}{{func b<T:T.g
+let{enum S{func b{
diff --git a/validation-test/compiler_crashers/28104-void.swift b/validation-test/compiler_crashers/28104-void.swift
new file mode 100644
index 0000000000000..cbbb3d3defdb1
--- /dev/null
+++ b/validation-test/compiler_crashers/28104-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct c<T where g:a{class B{let n={enum a{enum l
diff --git a/validation-test/compiler_crashers/28105-swift-constraints-constraintsystem-simplifymemberconstraint.swift b/validation-test/compiler_crashers/28105-swift-constraints-constraintsystem-simplifymemberconstraint.swift
new file mode 100644
index 0000000000000..7583bf00ae99a
--- /dev/null
+++ b/validation-test/compiler_crashers/28105-swift-constraints-constraintsystem-simplifymemberconstraint.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S{enum B:CollectionType func b{{class a{enum A{class b<f:f.c
diff --git a/validation-test/compiler_crashers/28106-swift-astcontext-setrawcomment.swift b/validation-test/compiler_crashers/28106-swift-astcontext-setrawcomment.swift
new file mode 100644
index 0000000000000..05d2450be7263
--- /dev/null
+++ b/validation-test/compiler_crashers/28106-swift-astcontext-setrawcomment.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T where k:b{class C{let a={var:{{}enum A{class d{class b{class B:BooleanType
diff --git a/validation-test/compiler_crashers/28107-swift-typechecker-checkconformance.swift b/validation-test/compiler_crashers/28107-swift-typechecker-checkconformance.swift
new file mode 100644
index 0000000000000..92d3dfb4442ed
--- /dev/null
+++ b/validation-test/compiler_crashers/28107-swift-typechecker-checkconformance.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func g{{enum b{class B<T where I:A{class A{{}struct d{}struct S<class A{{}let a{d{}}class b{class b
diff --git a/validation-test/compiler_crashers/28108-swift-genericsignature-genericsignature.swift b/validation-test/compiler_crashers/28108-swift-genericsignature-genericsignature.swift
new file mode 100644
index 0000000000000..86900e12eb765
--- /dev/null
+++ b/validation-test/compiler_crashers/28108-swift-genericsignature-genericsignature.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+enum A{init(){{}{{}}struct B<T where h:h{{{{}{}}}class A{enum B{struct S{enum b<T{func a{{A{
diff --git a/validation-test/compiler_crashers/28109-swift-constraints-constraintgraph-removeconstraint.swift b/validation-test/compiler_crashers/28109-swift-constraints-constraintgraph-removeconstraint.swift
new file mode 100644
index 0000000000000..d370588321fba
--- /dev/null
+++ b/validation-test/compiler_crashers/28109-swift-constraints-constraintgraph-removeconstraint.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{
+struct S{
+var f=c
+struct c<T
+func a{struct a{struct c<f:f.c
+var f=c
diff --git a/validation-test/compiler_crashers/28110-swift-typechecker-resolvetypeincontext.swift b/validation-test/compiler_crashers/28110-swift-typechecker-resolvetypeincontext.swift
new file mode 100644
index 0000000000000..c32201dcb1a4b
--- /dev/null
+++ b/validation-test/compiler_crashers/28110-swift-typechecker-resolvetypeincontext.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B<T where g:a{class a{class A{let:T{class d:A
diff --git a/validation-test/compiler_crashers/28111-swift-modulefile-readnormalconformance.swift b/validation-test/compiler_crashers/28111-swift-modulefile-readnormalconformance.swift
new file mode 100644
index 0000000000000..18decf0f75a2c
--- /dev/null
+++ b/validation-test/compiler_crashers/28111-swift-modulefile-readnormalconformance.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{deinit{enum b{case
+func a{
+class b{
+struct B<f:f.a
diff --git a/validation-test/compiler_crashers/28112-no-stacktrace.swift b/validation-test/compiler_crashers/28112-no-stacktrace.swift
new file mode 100644
index 0000000000000..df3ee0ed9cab7
--- /dev/null
+++ b/validation-test/compiler_crashers/28112-no-stacktrace.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{ d{}class B<T where f:a{let {{l {{}{}} }}class c{let h:CollectionType
diff --git a/validation-test/compiler_crashers/28113-swift-constraints-constraintgraph-gatherconstraints.swift b/validation-test/compiler_crashers/28113-swift-constraints-constraintgraph-gatherconstraints.swift
new file mode 100644
index 0000000000000..a7a1192ea08d9
--- /dev/null
+++ b/validation-test/compiler_crashers/28113-swift-constraints-constraintgraph-gatherconstraints.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct c<T
+var f=c{
+s d}struct S{
+var f=d
+struct d<f:f.c
diff --git a/validation-test/compiler_crashers/28114-swift-tuplepattern-create.swift b/validation-test/compiler_crashers/28114-swift-tuplepattern-create.swift
new file mode 100644
index 0000000000000..985894bbf5df5
--- /dev/null
+++ b/validation-test/compiler_crashers/28114-swift-tuplepattern-create.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{enum B{enum A{class b<f:f.c{}}init(}
diff --git a/validation-test/compiler_crashers/28115-swift-patternbindingdecl-create.swift b/validation-test/compiler_crashers/28115-swift-patternbindingdecl-create.swift
new file mode 100644
index 0000000000000..5e3cafe7d5873
--- /dev/null
+++ b/validation-test/compiler_crashers/28115-swift-patternbindingdecl-create.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{
+func a<f:f.c
+struct a{let:}}
diff --git a/validation-test/compiler_crashers/28116-swift-parser-skipsingle.swift b/validation-test/compiler_crashers/28116-swift-parser-skipsingle.swift
new file mode 100644
index 0000000000000..3e19fdeb96827
--- /dev/null
+++ b/validation-test/compiler_crashers/28116-swift-parser-skipsingle.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<h{if{{class a<T where h.g=a{({{{{{{{{{({{{{{{{{{{{{{{{{{{{{{{{{{({{{({{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{class
diff --git a/validation-test/compiler_crashers/28117-resolveidenttypecomponent.swift b/validation-test/compiler_crashers/28117-resolveidenttypecomponent.swift
new file mode 100644
index 0000000000000..1c5a45c67e0f7
--- /dev/null
+++ b/validation-test/compiler_crashers/28117-resolveidenttypecomponent.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var:{enum B{enum A{class b<f:f.c
+}.init
diff --git a/validation-test/compiler_crashers/28118-resolveidenttypecomponent.swift b/validation-test/compiler_crashers/28118-resolveidenttypecomponent.swift
new file mode 100644
index 0000000000000..283caa97e4597
--- /dev/null
+++ b/validation-test/compiler_crashers/28118-resolveidenttypecomponent.swift
@@ -0,0 +1,21 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{enum b{enum A{
+func a}
+func d
+func d<f:f.c
+struct S<T w {
+typealias e:a{c a{
+struct b{ S{
+strct a{css B:e:A{enc
+class b{
+{
+rut :e:a{
+stru{std<T here S{
+fu<f:f.c{
+s: a{
+{
diff --git a/validation-test/compiler_crashers/28119-void.swift b/validation-test/compiler_crashers/28119-void.swift
new file mode 100644
index 0000000000000..db110ebacf6b4
--- /dev/null
+++ b/validation-test/compiler_crashers/28119-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T where I=(){{}class A{struct c<T{{}class B:A{class A{class B{}struct B<T:e.a
diff --git a/validation-test/compiler_crashers/28120-swift-unqualifiedlookup-unqualifiedlookup.swift b/validation-test/compiler_crashers/28120-swift-unqualifiedlookup-unqualifiedlookup.swift
new file mode 100644
index 0000000000000..80f87e4e8d140
--- /dev/null
+++ b/validation-test/compiler_crashers/28120-swift-unqualifiedlookup-unqualifiedlookup.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T{protocol b{func f:B:class B<c:B<T>
diff --git a/validation-test/compiler_crashers/28121-swift-typechecker-coercepatterntotype.swift b/validation-test/compiler_crashers/28121-swift-typechecker-coercepatterntotype.swift
new file mode 100644
index 0000000000000..96633de65f7a5
--- /dev/null
+++ b/validation-test/compiler_crashers/28121-swift-typechecker-coercepatterntotype.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a
+struct S<T where g:A{var _=a<c
+struct c<c{}let c:
diff --git a/validation-test/compiler_crashers/28122-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/28122-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..c72d7e7436442
--- /dev/null
+++ b/validation-test/compiler_crashers/28122-swift-inflightdiagnostic.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{{enum e{struct c{class C{struct c{class a{{}enum B<T where I:a{{}struct c<T{enum b{var _=B struct B class B{var b{let a={B
diff --git a/validation-test/compiler_crashers/28123-swift-constraints-constraintsystem-matchtypes.swift b/validation-test/compiler_crashers/28123-swift-constraints-constraintsystem-matchtypes.swift
new file mode 100644
index 0000000000000..4f3c602278012
--- /dev/null
+++ b/validation-test/compiler_crashers/28123-swift-constraints-constraintsystem-matchtypes.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T where g:a{struct Q{enum b<T>var a{let a={let a{{b a
diff --git a/validation-test/compiler_crashers/28124-swift-typevisitor.swift b/validation-test/compiler_crashers/28124-swift-typevisitor.swift
new file mode 100644
index 0000000000000..3c965d530360b
--- /dev/null
+++ b/validation-test/compiler_crashers/28124-swift-typevisitor.swift
@@ -0,0 +1,8 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import a{let s{class S<T{class a<T where g:e
+var d{protocol a{func b<T:T.a
diff --git a/validation-test/compiler_crashers/28125-swift-constraints-constraint-createbindoverload.swift b/validation-test/compiler_crashers/28125-swift-constraints-constraint-createbindoverload.swift
new file mode 100644
index 0000000000000..b85892aabc6fd
--- /dev/null
+++ b/validation-test/compiler_crashers/28125-swift-constraints-constraint-createbindoverload.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+[1
+let a{[{{
+let:{
+class c
+{{}class a{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
+{
+}}
+}
+class B
diff --git a/validation-test/compiler_crashers/28126-swift-getbuiltinvaluedecl.swift b/validation-test/compiler_crashers/28126-swift-getbuiltinvaluedecl.swift
new file mode 100644
index 0000000000000..adcb97ae71ffc
--- /dev/null
+++ b/validation-test/compiler_crashers/28126-swift-getbuiltinvaluedecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{class a{enum S<T{class C{func f{{{}let a{struct S<f:f.c}}}{}var b:T
diff --git a/validation-test/compiler_crashers/28127-swift-typebase-getmembersubstitutions.swift b/validation-test/compiler_crashers/28127-swift-typebase-getmembersubstitutions.swift
new file mode 100644
index 0000000000000..b7e7f6e36f091
--- /dev/null
+++ b/validation-test/compiler_crashers/28127-swift-typebase-getmembersubstitutions.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B{
+func f:d
+protocol A
+func f<T:T.c
+struct d:A
diff --git a/validation-test/compiler_crashers/28128-swift-parser-parseidentifier.swift b/validation-test/compiler_crashers/28128-swift-parser-parseidentifier.swift
new file mode 100644
index 0000000000000..41c97c8a093be
--- /dev/null
+++ b/validation-test/compiler_crashers/28128-swift-parser-parseidentifier.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T where B:C{{
+}class b{class B{class B<where g<c<a
+let v:T
diff --git a/validation-test/compiler_crashers/28129-no-stacktrace.swift b/validation-test/compiler_crashers/28129-no-stacktrace.swift
new file mode 100644
index 0000000000000..a86ba7b796a79
--- /dev/null
+++ b/validation-test/compiler_crashers/28129-no-stacktrace.swift
@@ -0,0 +1,20 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{{{{{
+class B f{
+class d {
+a
+funej
+let a
+{
+struct Q{
+let a}}class S<T{func a<h{func b<T where h.g=a{ {
+" """ "
+d{_= {{ {
+{
+func d {func a{{e S{
+class e{
diff --git a/validation-test/compiler_crashers/28130-swift-constraints-constraintsystem-solverscope-solverscope.swift b/validation-test/compiler_crashers/28130-swift-constraints-constraintsystem-solverscope-solverscope.swift
new file mode 100644
index 0000000000000..fa3cf6102ba95
--- /dev/null
+++ b/validation-test/compiler_crashers/28130-swift-constraints-constraintsystem-solverscope-solverscope.swift
@@ -0,0 +1,19 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B<d{
+class b<T
+{
+class B<I where g:T{
+class b{
+func e
+let a{
+let a=d<T
+struct B{
+class B{
+class b
+{
+let a=e T
diff --git a/validation-test/compiler_crashers/28131-void.swift b/validation-test/compiler_crashers/28131-void.swift
new file mode 100644
index 0000000000000..ad5fe4cd6cd7b
--- /dev/null
+++ b/validation-test/compiler_crashers/28131-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{return""struct a{class B{class S<T where H:a{struct Q{struct A{let s=A{
diff --git a/validation-test/compiler_crashers/28132-swift-namelookup-findlocalval-visitifstmt.swift b/validation-test/compiler_crashers/28132-swift-namelookup-findlocalval-visitifstmt.swift
new file mode 100644
index 0000000000000..b6a3c9209743b
--- /dev/null
+++ b/validation-test/compiler_crashers/28132-swift-namelookup-findlocalval-visitifstmt.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct S<T{func f{if{class A{func b<U:A class B<H:T.b
diff --git a/validation-test/compiler_crashers/28133-swift-parser-parsedeclenum.swift b/validation-test/compiler_crashers/28133-swift-parser-parsedeclenum.swift
new file mode 100644
index 0000000000000..06efc0b09fa45
--- /dev/null
+++ b/validation-test/compiler_crashers/28133-swift-parser-parsedeclenum.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{struct d{struct c{enum A{class b<f:f.c}}}
diff --git a/validation-test/compiler_crashers/28134-swift-typebase-getmembersubstitutions.swift b/validation-test/compiler_crashers/28134-swift-typebase-getmembersubstitutions.swift
new file mode 100644
index 0000000000000..077305f48ce25
--- /dev/null
+++ b/validation-test/compiler_crashers/28134-swift-typebase-getmembersubstitutions.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{let "
+func a{
+struct S< {struct c<T where g.i
+func a{ {{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
+class B{{
+"
+} {
+class d{clas{
+{let "
+class B{
diff --git a/validation-test/compiler_crashers/28135-swift-parser-parseexprlist.swift b/validation-test/compiler_crashers/28135-swift-parser-parseexprlist.swift
new file mode 100644
index 0000000000000..d3080ac41f979
--- /dev/null
+++ b/validation-test/compiler_crashers/28135-swift-parser-parseexprlist.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func<{{{let a{struct S<f:f.c}}}var b(}
diff --git a/validation-test/compiler_crashers/28136-swift-valuedecl-getinterfacetype.swift b/validation-test/compiler_crashers/28136-swift-valuedecl-getinterfacetype.swift
new file mode 100644
index 0000000000000..6170dc2b2cace
--- /dev/null
+++ b/validation-test/compiler_crashers/28136-swift-valuedecl-getinterfacetype.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b
+{
+class B:b
+var d=0
+class b
+func a{struct c{struct S{
+enum S{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
+{
+c
diff --git a/validation-test/compiler_crashers/28137-swift-identtyperepr-create.swift b/validation-test/compiler_crashers/28137-swift-identtyperepr-create.swift
new file mode 100644
index 0000000000000..b430aa5e9384f
--- /dev/null
+++ b/validation-test/compiler_crashers/28137-swift-identtyperepr-create.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B{struct S<T:T.T where T:T.a}
diff --git a/validation-test/compiler_crashers/28138-swift-constraints-constraintsystem-addoverloadset.swift b/validation-test/compiler_crashers/28138-swift-constraints-constraintsystem-addoverloadset.swift
new file mode 100644
index 0000000000000..30ba9bdb43493
--- /dev/null
+++ b/validation-test/compiler_crashers/28138-swift-constraints-constraintsystem-addoverloadset.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class d{
+func a{a
+class d{enum S{class d{func b<T:T.a
diff --git a/validation-test/compiler_crashers/28139-swift-classdecl-findoverridingdecl.swift b/validation-test/compiler_crashers/28139-swift-classdecl-findoverridingdecl.swift
new file mode 100644
index 0000000000000..9c740801ffb33
--- /dev/null
+++ b/validation-test/compiler_crashers/28139-swift-classdecl-findoverridingdecl.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+}class a
+{
+var f{{
+struct Q{class
+a{
+struct b<T:T.a
+}
+class B:{ { { {:h{ }
+}{{ h.
+{} b<T{{ { {} S{{{:{
+var f {"
diff --git a/validation-test/compiler_crashers/28140-swift-typedecl-getdeclaredinterfacetype.swift b/validation-test/compiler_crashers/28140-swift-typedecl-getdeclaredinterfacetype.swift
new file mode 100644
index 0000000000000..a97471c81a242
--- /dev/null
+++ b/validation-test/compiler_crashers/28140-swift-typedecl-getdeclaredinterfacetype.swift
@@ -0,0 +1,15 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class c{
+let a{
+a
+struct S<>:CollectionType
+struct S{
+struct S{
+struct S{
+enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
+a
diff --git a/validation-test/compiler_crashers/28141-swift-typechecker-addimplicitconstructors.swift b/validation-test/compiler_crashers/28141-swift-typechecker-addimplicitconstructors.swift
new file mode 100644
index 0000000000000..5da12d34dfee5
--- /dev/null
+++ b/validation-test/compiler_crashers/28141-swift-typechecker-addimplicitconstructors.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var _={class A{}struct Q{enum B{struct B{struct Q{class C<T where g:A{struct c<T{struct c{}let c{var _=c
diff --git a/validation-test/compiler_crashers/28142-swift-constraints-constraintsystem-simplifymemberconstraint.swift b/validation-test/compiler_crashers/28142-swift-constraints-constraintsystem-simplifymemberconstraint.swift
new file mode 100644
index 0000000000000..d107138cf6537
--- /dev/null
+++ b/validation-test/compiler_crashers/28142-swift-constraints-constraintsystem-simplifymemberconstraint.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class a{class b:CollectionType
+}enum B<T where B:a{{}class b<a
+class b<T where g:A{var d=b(
diff --git a/validation-test/compiler_crashers/28143-llvm-foldingset-swift-structtype-computenodehash.swift b/validation-test/compiler_crashers/28143-llvm-foldingset-swift-structtype-computenodehash.swift
new file mode 100644
index 0000000000000..c3ad84dcd73f6
--- /dev/null
+++ b/validation-test/compiler_crashers/28143-llvm-foldingset-swift-structtype-computenodehash.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let f{class a{}struct e{var h=}enum S{enum S<enum S<T:T.a
diff --git a/validation-test/compiler_crashers/28144-swift-typechecker-substituteinputsugartypeforresult.swift b/validation-test/compiler_crashers/28144-swift-typechecker-substituteinputsugartypeforresult.swift
new file mode 100644
index 0000000000000..5769e15b5e2eb
--- /dev/null
+++ b/validation-test/compiler_crashers/28144-swift-typechecker-substituteinputsugartypeforresult.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let e=1:{var:a class a<T:T.a
diff --git a/validation-test/compiler_crashers/28145-swift-constraints-constraintsystem-getconstraintlocator.swift b/validation-test/compiler_crashers/28145-swift-constraints-constraintsystem-getconstraintlocator.swift
new file mode 100644
index 0000000000000..d49ae1b10e0fc
--- /dev/null
+++ b/validation-test/compiler_crashers/28145-swift-constraints-constraintsystem-getconstraintlocator.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class b<U{{}class a{class B:a{let Q{var h{class c{class B{enum S{class a<T:T.a
diff --git a/validation-test/compiler_crashers/28146-swift-clangimporter-implementation-importdeclandcacheimpl.swift b/validation-test/compiler_crashers/28146-swift-clangimporter-implementation-importdeclandcacheimpl.swift
new file mode 100644
index 0000000000000..1c5e8e632a9b9
--- /dev/null
+++ b/validation-test/compiler_crashers/28146-swift-clangimporter-implementation-importdeclandcacheimpl.swift
@@ -0,0 +1,19 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{
+let e=d<a}let a{if{
+class S{
+var f={class A{
+struct c<T where g:A{
+struct
+b{
+struct c{
+class A{
+class C{
+enum S<a{var f=c
+struct c
+struct c
diff --git a/validation-test/compiler_crashers/28147-swift-mangle-mangler-mangledefaultargumententity.swift b/validation-test/compiler_crashers/28147-swift-mangle-mangler-mangledefaultargumententity.swift
new file mode 100644
index 0000000000000..7a7081e99ec6e
--- /dev/null
+++ b/validation-test/compiler_crashers/28147-swift-mangle-mangler-mangledefaultargumententity.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{
+class b{
+struct S<T where g:A{
+enum S:BooleanType,d
+class a{
+class b{var b{
+if true{
+}
+}}
+var f:T
diff --git a/validation-test/compiler_crashers/28148-swift-constraints-constraintsystem-getconstraintlocator.swift b/validation-test/compiler_crashers/28148-swift-constraints-constraintsystem-getconstraintlocator.swift
new file mode 100644
index 0000000000000..a820cbec124ff
--- /dev/null
+++ b/validation-test/compiler_crashers/28148-swift-constraints-constraintsystem-getconstraintlocator.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{
+struct S<T where g:T{
+{
+}
+class B
+struct S{
+func d{
+let a=B
+a{{}}}}
+struct B{var _=a{
diff --git a/validation-test/compiler_crashers/28149-addcurriedselftype.swift b/validation-test/compiler_crashers/28149-addcurriedselftype.swift
new file mode 100644
index 0000000000000..c70af27d13ffa
--- /dev/null
+++ b/validation-test/compiler_crashers/28149-addcurriedselftype.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B<I{let a=Void{struct A:OptionSetType{
+let rawValue=0
+let rawValue=0
diff --git a/validation-test/compiler_crashers/28150-swift-astcontext-loadextensions.swift b/validation-test/compiler_crashers/28150-swift-astcontext-loadextensions.swift
new file mode 100644
index 0000000000000..cae8035f92250
--- /dev/null
+++ b/validation-test/compiler_crashers/28150-swift-astcontext-loadextensions.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+var d{{var f{func a<T:T.a}}enum B{enum a{class S{class S{{}enum S
diff --git a/validation-test/compiler_crashers/28151-swift-constraints-constraintsystem-simplifymemberconstraint.swift b/validation-test/compiler_crashers/28151-swift-constraints-constraintsystem-simplifymemberconstraint.swift
new file mode 100644
index 0000000000000..21f2b29a3ea78
--- /dev/null
+++ b/validation-test/compiler_crashers/28151-swift-constraints-constraintsystem-simplifymemberconstraint.swift
@@ -0,0 +1,12 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class k:CollectionType
+let a{
+enum B{struct d{
+struct S{let a=0.g
+let a{class d<T where f:A{
+enum E{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28152-swift-conformancelookuptable-lookupconformance.swift b/validation-test/compiler_crashers/28152-swift-conformancelookuptable-lookupconformance.swift
new file mode 100644
index 0000000000000..11cb808547c91
--- /dev/null
+++ b/validation-test/compiler_crashers/28152-swift-conformancelookuptable-lookupconformance.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{return""let a{class A{struct S{struct S{class k:A}{}class B{{}enum B{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28153-swift-normalprotocolconformance-setwitness.swift b/validation-test/compiler_crashers/28153-swift-normalprotocolconformance-setwitness.swift
new file mode 100644
index 0000000000000..2640e4dbc5323
--- /dev/null
+++ b/validation-test/compiler_crashers/28153-swift-normalprotocolconformance-setwitness.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+import a
+enum S<f{class B<I{
+let i{struct A:OptionSetType{struct B<a where I.e:a
diff --git a/validation-test/compiler_crashers/28154-swift-genericsignature-get.swift b/validation-test/compiler_crashers/28154-swift-genericsignature-get.swift
new file mode 100644
index 0000000000000..996600fe78b3d
--- /dev/null
+++ b/validation-test/compiler_crashers/28154-swift-genericsignature-get.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct A:OptionSetType
+B{struct A
+c{_{
+enum S{class a{
+enum S{
+class d{
+{
+}enum B{struct e{
+{
+}enum b{class c<T where a:a{
+class a{struct A:OptionSetType
diff --git a/validation-test/compiler_crashers/28155-swift-typechecker-validategenericfuncsignature.swift b/validation-test/compiler_crashers/28155-swift-typechecker-validategenericfuncsignature.swift
new file mode 100644
index 0000000000000..82709da073b4d
--- /dev/null
+++ b/validation-test/compiler_crashers/28155-swift-typechecker-validategenericfuncsignature.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{func b->Self{{{}}class B<n{let a=self
diff --git a/validation-test/compiler_crashers/28156-swift-typechecker-lookupunqualified.swift b/validation-test/compiler_crashers/28156-swift-typechecker-lookupunqualified.swift
new file mode 100644
index 0000000000000..836e228016e96
--- /dev/null
+++ b/validation-test/compiler_crashers/28156-swift-typechecker-lookupunqualified.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let c{class B{struct S<T where I:a{class a{class A{struct c{enum b{class c:a}}class B{{}class A{struct Q{struct Q{class A{class a{{}struct S{enum b{struct S{struct S{let:a{b
diff --git a/validation-test/compiler_crashers/28157-swift-constraints-constraintsystem-solverstate-solverstate.swift b/validation-test/compiler_crashers/28157-swift-constraints-constraintsystem-solverstate-solverstate.swift
new file mode 100644
index 0000000000000..73915fcc997d6
--- /dev/null
+++ b/validation-test/compiler_crashers/28157-swift-constraints-constraintsystem-solverstate-solverstate.swift
@@ -0,0 +1,16 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<T
+{func a
+{{
+class S{
+var d=a<T
+}}
+class A{class S<T where g:P{class a{
+class B<b
+class B{
+let f=B
diff --git a/validation-test/compiler_crashers/28158-swift-parser-diagnose.swift b/validation-test/compiler_crashers/28158-swift-parser-diagnose.swift
new file mode 100644
index 0000000000000..abb4e47eb9d21
--- /dev/null
+++ b/validation-test/compiler_crashers/28158-swift-parser-diagnose.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class B<T where h:A{class A{
+struct B<T
+class B{
+let:{let a=B{
diff --git a/validation-test/compiler_crashers/28159-swift-clangimporter-lookupvalue.swift b/validation-test/compiler_crashers/28159-swift-clangimporter-lookupvalue.swift
new file mode 100644
index 0000000000000..1db3711105b86
--- /dev/null
+++ b/validation-test/compiler_crashers/28159-swift-clangimporter-lookupvalue.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+let a{var d<T class p{let a{B{}{struct A{struct S{struct A{class B{struct S{struct Q{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28160-swift-inflightdiagnostic.swift b/validation-test/compiler_crashers/28160-swift-inflightdiagnostic.swift
new file mode 100644
index 0000000000000..71848684ea35b
--- /dev/null
+++ b/validation-test/compiler_crashers/28160-swift-inflightdiagnostic.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class B:CollectionType
+a{
+struct S{
+class A{class b{
+enum B:A
+}}}}class B{
+struct S{
+{
+{
+}{}}
+enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28161-swift-constraints-constraintsystem-solvesingle.swift b/validation-test/compiler_crashers/28161-swift-constraints-constraintsystem-solvesingle.swift
new file mode 100644
index 0000000000000..e44a64eec9586
--- /dev/null
+++ b/validation-test/compiler_crashers/28161-swift-constraints-constraintsystem-solvesingle.swift
@@ -0,0 +1,17 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+class B{
+class p{
+{
+}
+enum S{
+var d=a{
+}
+struct B:CollectionType}}}
+enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
+a
diff --git a/validation-test/compiler_crashers/28162-swift-astcontext-addedexternaldecl.swift b/validation-test/compiler_crashers/28162-swift-astcontext-addedexternaldecl.swift
new file mode 100644
index 0000000000000..bd2f51eec4a0d
--- /dev/null
+++ b/validation-test/compiler_crashers/28162-swift-astcontext-addedexternaldecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+<T where{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B}}class B
diff --git a/validation-test/compiler_crashers/28163-swift-astcontext-getoptionaldecl.swift b/validation-test/compiler_crashers/28163-swift-astcontext-getoptionaldecl.swift
new file mode 100644
index 0000000000000..eb33ec5745cf4
--- /dev/null
+++ b/validation-test/compiler_crashers/28163-swift-astcontext-getoptionaldecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{{}let a{a:{struct c{var:CollectionType{class d{struct d{enum E<T where B:a{struct B{{}struct B<g{class B{class d{var _=B
diff --git a/validation-test/compiler_crashers/28164-swift-typebase-getdesugaredtype.swift b/validation-test/compiler_crashers/28164-swift-typebase-getdesugaredtype.swift
new file mode 100644
index 0000000000000..6b44125c23ff1
--- /dev/null
+++ b/validation-test/compiler_crashers/28164-swift-typebase-getdesugaredtype.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class a{func g{{
+func a:CollectionType
+b
+}enum E<T where B:a{struct B{struct B<g{class B{class d{var _=B{
diff --git a/validation-test/compiler_crashers/28165-swift-archetypetype-getnestedtype.swift b/validation-test/compiler_crashers/28165-swift-archetypetype-getnestedtype.swift
new file mode 100644
index 0000000000000..d4bc80c652aae
--- /dev/null
+++ b/validation-test/compiler_crashers/28165-swift-archetypetype-getnestedtype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{class b<U:CollectionType{func a<a}struct S<T:T.b
diff --git a/validation-test/compiler_crashers/28166-swift-parser-parsedecl.swift b/validation-test/compiler_crashers/28166-swift-parser-parsedecl.swift
new file mode 100644
index 0000000000000..d67c126ab5e8a
--- /dev/null
+++ b/validation-test/compiler_crashers/28166-swift-parser-parsedecl.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+if{func b<T:T.E{class}}
diff --git a/validation-test/compiler_crashers/28167-swift-generictypeparamtype-get.swift b/validation-test/compiler_crashers/28167-swift-generictypeparamtype-get.swift
new file mode 100644
index 0000000000000..fe4aec07050b5
--- /dev/null
+++ b/validation-test/compiler_crashers/28167-swift-generictypeparamtype-get.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{deinit{enum S{{{{}}}class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28168-bool.swift b/validation-test/compiler_crashers/28168-bool.swift
new file mode 100644
index 0000000000000..c7496b3f1154c
--- /dev/null
+++ b/validation-test/compiler_crashers/28168-bool.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func a{if{struct S{protocol B{{}typealias d:a{{}}}}}}class S<T{func a<h{func b<T where h.g=a
diff --git a/validation-test/compiler_crashers/28169-swift-parser-parsestmtreturn.swift b/validation-test/compiler_crashers/28169-swift-parser-parsestmtreturn.swift
new file mode 100644
index 0000000000000..19a022ef0acf9
--- /dev/null
+++ b/validation-test/compiler_crashers/28169-swift-parser-parsestmtreturn.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct c<T where k:b{class A{}struct A{let c{let a=A{return
diff --git a/validation-test/compiler_crashers/28171-swift-partialgenerictypetoarchetyperesolver-resolvegenerictypeparamtype.swift b/validation-test/compiler_crashers/28171-swift-partialgenerictypetoarchetyperesolver-resolvegenerictypeparamtype.swift
new file mode 100644
index 0000000000000..d79d446b1170b
--- /dev/null
+++ b/validation-test/compiler_crashers/28171-swift-partialgenerictypetoarchetyperesolver-resolvegenerictypeparamtype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<T{{var A{class B<H:T.b}}struct S{protocol A:T
diff --git a/validation-test/compiler_crashers/28172-swift-parser-parsedeclstruct.swift b/validation-test/compiler_crashers/28172-swift-parser-parsedeclstruct.swift
new file mode 100644
index 0000000000000..14343b1f03c47
--- /dev/null
+++ b/validation-test/compiler_crashers/28172-swift-parser-parsedeclstruct.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{class A{deinit{struct S{enum B{enum A{class b<f:f.c}}}}}
diff --git a/validation-test/compiler_crashers/28173-swift-typebase-isspecialized.swift b/validation-test/compiler_crashers/28173-swift-typebase-isspecialized.swift
new file mode 100644
index 0000000000000..41a1d27a65f50
--- /dev/null
+++ b/validation-test/compiler_crashers/28173-swift-typebase-isspecialized.swift
@@ -0,0 +1,11 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{struct A:OptionSetType
+struct A{
+func b<T:d{
+}
+class d<T:T.e
diff --git a/validation-test/compiler_crashers/28174-swift-constraints-constraintsystem-simplify.swift b/validation-test/compiler_crashers/28174-swift-constraints-constraintsystem-simplify.swift
new file mode 100644
index 0000000000000..0c7fd007266e1
--- /dev/null
+++ b/validation-test/compiler_crashers/28174-swift-constraints-constraintsystem-simplify.swift
@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+{
+let f=[]class a{
+class b{{}struct B<T where g:A{struct B<T
+let f=B
diff --git a/validation-test/compiler_crashers/28175-swift-parser-parsedeclextension.swift b/validation-test/compiler_crashers/28175-swift-parser-parsedeclextension.swift
new file mode 100644
index 0000000000000..8d030b8b21191
--- /dev/null
+++ b/validation-test/compiler_crashers/28175-swift-parser-parsedeclextension.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+func b<f:f.a{extension}
diff --git a/validation-test/compiler_crashers/28176-swift-parser-parsegenericparameters.swift b/validation-test/compiler_crashers/28176-swift-parser-parsegenericparameters.swift
new file mode 100644
index 0000000000000..87e8affd47ce6
--- /dev/null
+++ b/validation-test/compiler_crashers/28176-swift-parser-parsegenericparameters.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+struct B{class d{class B{enum S<{func f<T:T.w}}}
diff --git a/validation-test/compiler_crashers/28177-swift-constraints-solution-coercetotype.swift b/validation-test/compiler_crashers/28177-swift-constraints-solution-coercetotype.swift
new file mode 100644
index 0000000000000..9c2282cee4c68
--- /dev/null
+++ b/validation-test/compiler_crashers/28177-swift-constraints-solution-coercetotype.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class n{var e{if let a=self{enum b{enum w{func f<T:T.E
diff --git a/validation-test/compiler_crashers/28178-swift-astcontext-getprotocol.swift b/validation-test/compiler_crashers/28178-swift-astcontext-getprotocol.swift
new file mode 100644
index 0000000000000..c501f899c5e86
--- /dev/null
+++ b/validation-test/compiler_crashers/28178-swift-astcontext-getprotocol.swift
@@ -0,0 +1,9 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+println{enum b{class B<d where I:A{
+class B<D
+var _=B
diff --git a/validation-test/compiler_crashers/28179-void.swift b/validation-test/compiler_crashers/28179-void.swift
new file mode 100644
index 0000000000000..8fee6898c41c0
--- /dev/null
+++ b/validation-test/compiler_crashers/28179-void.swift
@@ -0,0 +1,7 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class S<T{func a<h{func b<T where h.g=a{}}enum b{struct A{struct A{struct A{struct A:a
diff --git a/validation-test/compiler_crashers/28180-rawrepresentable-extension-with-initializer.swift b/validation-test/compiler_crashers/28180-rawrepresentable-extension-with-initializer.swift
new file mode 100644
index 0000000000000..c342d27e59eb0
--- /dev/null
+++ b/validation-test/compiler_crashers/28180-rawrepresentable-extension-with-initializer.swift
@@ -0,0 +1,14 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+
+extension RawRepresentable {
+    init?(rawValue optionalRawValue: RawValue?) {
+        guard let rawValue = optionalRawValue, value = Self(rawValue: rawValue) else { return nil }
+        self = value
+    }
+}
+
+enum E: Int {
+    case A = 0, B
+}
+
+let v: E = .A
diff --git a/validation-test/compiler_crashers/README b/validation-test/compiler_crashers/README
index 707676a4d1539..4258940bf289f 100644
--- a/validation-test/compiler_crashers/README
+++ b/validation-test/compiler_crashers/README
@@ -24,4 +24,4 @@ SOFTWARE.
 Repository: https://github.com/practicalswift/swift-compiler-crashes.git
 Web URL: https://github.com/practicalswift/swift-compiler-crashes
 
-Tests updated as of revision 9e5e39540e811b23ac9a8c0395e9617a5f569c7f
+Tests updated as of revision 736d5c8bee75f676ff3750e4ad3165d81059fe03
diff --git a/validation-test/compiler_crashers_fixed/27818-swift-astvisitor.swift b/validation-test/compiler_crashers_fixed/27818-swift-astvisitor.swift
new file mode 100644
index 0000000000000..2c4ab83eaed29
--- /dev/null
+++ b/validation-test/compiler_crashers_fixed/27818-swift-astvisitor.swift
@@ -0,0 +1,16 @@
+// RUN: %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/zats (Sash Zats)
+// Radar: http://openradar.appspot.com/22917580
+
+class B {
+}
+
+class A: B {
+    override init() {
+        defer {
+            super.init()
+        }
+    }
+}
diff --git a/validation-test/compiler_crashers_fixed/28181-llvm-irbuilder.swift b/validation-test/compiler_crashers_fixed/28181-llvm-irbuilder.swift
new file mode 100644
index 0000000000000..7efbdeaba07d7
--- /dev/null
+++ b/validation-test/compiler_crashers_fixed/28181-llvm-irbuilder.swift
@@ -0,0 +1,12 @@
+// RUN: %target-swift-frontend %s -parse
+
+struct A {
+    func a() -> String {
+        return ""
+    }
+}
+func b() {
+    guard let c = A.a as? String else {
+        return
+    }
+}
diff --git a/validation-test/compiler_crashers_fixed/28182-anonymous-namespace-favorcalloverloads.swift b/validation-test/compiler_crashers_fixed/28182-anonymous-namespace-favorcalloverloads.swift
new file mode 100644
index 0000000000000..17887a0f72b7d
--- /dev/null
+++ b/validation-test/compiler_crashers_fixed/28182-anonymous-namespace-favorcalloverloads.swift
@@ -0,0 +1,7 @@
+// RUN: not %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case found by https://github.com/jtbandes (Jacob Bandes-Storch)
+// <rdar://23719809>
+
+func~=switch 0{case 0
diff --git a/validation-test/compiler_crashers_fixed/28183-swift-typebase-isequal.swift b/validation-test/compiler_crashers_fixed/28183-swift-typebase-isequal.swift
new file mode 100644
index 0000000000000..2babfb76a7c7b
--- /dev/null
+++ b/validation-test/compiler_crashers_fixed/28183-swift-typebase-isequal.swift
@@ -0,0 +1,7 @@
+// RUN: not %target-swift-frontend %s -parse
+
+// Distributed under the terms of the MIT license
+// Test case found by https://github.com/jtbandes (Jacob Bandes-Storch)
+// <rdar://23720006>
+
+func~=(()->(}switch 0{case 0