From 7473eae623541f910a51459499f15bfe510a2ae3 Mon Sep 17 00:00:00 2001
From: Egor Zhdan <e_zhdan@apple.com>
Date: Wed, 27 Nov 2024 16:59:37 +0000
Subject: [PATCH] [cxx-interop] Workaround a compiler crash for CxxStdlib on
 Windows

This is a workaround for https://github.com/swiftlang/swift/issues/77856.

rdar://140358388
---
 stdlib/public/Cxx/std/String.swift | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/stdlib/public/Cxx/std/String.swift b/stdlib/public/Cxx/std/String.swift
index 3d379e81cd17b..1963aa610cebc 100644
--- a/stdlib/public/Cxx/std/String.swift
+++ b/stdlib/public/Cxx/std/String.swift
@@ -198,7 +198,11 @@ extension std.string: Hashable {
   @_alwaysEmitIntoClient
   public func hash(into hasher: inout Hasher) {
     // Call std::hash<std::string>::operator()
+#if os(Windows) // FIXME: https://github.com/swiftlang/swift/issues/77856
+    let cxxHash = __swift_interopHashOfString().callAsFunction(self)
+#else
     let cxxHash = __swift_interopComputeHashOfString(self)
+#endif
     hasher.combine(cxxHash)
   }
 }
@@ -207,7 +211,11 @@ extension std.u16string: Hashable {
   @_alwaysEmitIntoClient
   public func hash(into hasher: inout Hasher) {
     // Call std::hash<std::u16string>::operator()
+#if os(Windows) // FIXME: https://github.com/swiftlang/swift/issues/77856
+    let cxxHash = __swift_interopHashOfU16String().callAsFunction(self)
+#else
     let cxxHash = __swift_interopComputeHashOfU16String(self)
+#endif
     hasher.combine(cxxHash)
   }
 }
@@ -216,7 +224,11 @@ extension std.u32string: Hashable {
   @_alwaysEmitIntoClient
   public func hash(into hasher: inout Hasher) {
     // Call std::hash<std::u32string>::operator()
+#if os(Windows) // FIXME: https://github.com/swiftlang/swift/issues/77856
+    let cxxHash = __swift_interopHashOfU32String().callAsFunction(self)
+#else
     let cxxHash = __swift_interopComputeHashOfU32String(self)
+#endif
     hasher.combine(cxxHash)
   }
 }