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Mypy crash on master with property alias with setters

crash

topic-descriptorsProperties, class vs. instance attributesProperties, class vs. instance attributes

Status: Open.

#19572 In python/mypy;

· Avasam opened on Aug 2, 2025

Mypyc gcc compilation fails with specific duplicate variable definition

crash

topic-mypycmypyc bugsmypyc bugs

Status: Open.

#19557 In python/mypy;

· CoolCat467 opened on Aug 1, 2025

Crash when type variable has same name as an external symbol with an erroneous definition in PEP 695 generic class

crash

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

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

topic-type-variables

Status: Open.

#19526 In python/mypy;

· brianschubert opened on Jul 28, 2025

Startup error: occasional "AssertionError: Cannot find component 'SSL' for 'OpenSSL.SSL.Context'"

crash

Status: Open.

#19477 In python/mypy;

· jvanasco opened on Jul 17, 2025

Internal error: KeyError 'setter_type' during node deserialization

crash

topic-incremental

Status: Open.

#19359 In python/mypy;

· ahmedelq opened on Jun 30, 2025

MyPy fails on Python 3.14 PEP 750 template string (tstring, t-string), e.g. <code>t'{42}'</code>

crash

Status: Open.

#19329 In python/mypy;

· Dutcho opened on Jun 23, 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

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

pendingIssues that may be closedIssues that may be closed

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