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crash for a very specific invocation of mypy: <code>assert isinstance(visitor, SyntheticTypeVisitor)</code>

crash

Status: Open.

#19286 In python/mypy;

· asottile-sentry opened on Jun 12, 2025

Crash using forward-referencing type alias parameterised by dependent type variables

crash

topic-pep-696TypeVar defaultsTypeVar defaults

topic-type-aliasTypeAlias and other type alias issuesTypeAlias and other type alias issues

Status: Open.

#19186 In python/mypy;

· bzoracler opened on May 31, 2025

TYPE_CHECKING-only <code>Final</code>-annotated nested <code>always-true/false</code> flags crashes with conditional type aliases

crash

Status: Open.

#19185 In python/mypy;

· bzoracler opened on May 31, 2025

<code>class S(tuple[*tuple[()]])</code> crashes mypy

crash

topic-pep-646PEP 646 (TypeVarTuple, Unpack)PEP 646 (TypeVarTuple, Unpack)

Status: Open.

#19105 In python/mypy;

· jorenham opened on May 18, 2025

Crash with Generic Class and Dict

crash

topic-pep-695Issues related to PEP 695 syntaxIssues related to PEP 695 syntax

Status: Open.

#18996 In python/mypy;

· mscheifer opened on Apr 29, 2025

Mypyc produces module that crashes (segmentation fault) when executed

crash

topic-mypycmypyc bugsmypyc bugs

Status: Open.

#18992 In python/mypy;

· svalentin opened on Apr 28, 2025

dmypy crash

crash

topic-daemondmypydmypy

Status: Open.

#18755 In python/mypy;

· johnfn opened on Mar 3, 2025

mypy crashes with "Cannot find component" on subsequent runs

crash

topic-daemondmypydmypy

Status: Open.

#18751 In python/mypy;

· johnfn opened on Mar 3, 2025

INTERNAL ERROR when using mypy with pre-commit (all versions)

crash

Status: Open.

#18579 In python/mypy;

· TravisHardman opened on Jan 31, 2025

Crash if a class is generic over a PEP-695 parameter that has the same name as an old-style <code>TypeVar</code> that is also in scope and the old-style TypeVar has a bound which uses an unquoted forward reference

crash

topic-pep-695Issues related to PEP 695 syntaxIssues related to PEP 695 syntax

Status: Open.

#18507 In python/mypy;

· AlexWaygood opened on Jan 22, 2025

<code>KeyError: 'deprecated'</code> because of bad cache

crash

Status: Open.

#18473 In python/mypy;

· injust opened on Jan 15, 2025

INTERNAL ERROR: maximum semantic analysis iteration count reached Found 1 error in 1 file (errors prevented further checking)

crash

semantic-analyzerProblems that happen during semantic analysisProblems that happen during semantic analysis

Status: Open.

#18237 In python/mypy;

· Ryang20718 opened on Dec 3, 2024