Description

serhiy-storchaka

opened on May 30, 2022

Issue body actions

During work on #93330 I have found an error in the C code which causes crash when substitute a TypeVar in nested generic alias after TypeVarTuple.

For example:

>>> from typing import *
>>> T = TypeVar('T')
>>> Ts = TypeVarTuple('Ts')
>>> tuple[*Ts, list[T]][int, str, bool]
Segmentation fault (core dumped)

Activity

1. serhiy-storchaka

   added

   3.11only security fixesonly security fixes

   type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

   topic-typing

   3.12only security fixesonly security fixes

   on May 30, 2022
2. serhiy-storchaka

   added a commit that references this issue on May 30, 2022

   pythongh-93345: Fix a crash in substitution of nested TypeVar after T…

   f8005fc
3. serhiy-storchaka

   closed this as completedin #93346on May 31, 2022
4. serhiy-storchaka

   added a commit that references this issue on May 31, 2022

   gh-93345: Fix a crash in substitution of nested TypeVar after TypeVar…

   f545fc9
5. serhiy-storchaka

   reopened this on May 31, 2022
6. serhiy-storchaka

   added

   release-blocker

   on May 31, 2022
7. miss-islington

   added 2 commits that reference this issue on Jun 1, 2022

   pythongh-93345: Fix a crash in substitution of nested TypeVar after T…

   ba4da2a

   gh-93345: Fix a crash in substitution of nested TypeVar after TypeVar…

   3265ff9
8. serhiy-storchaka

   removed

   release-blocker

   on Jun 1, 2022
9. serhiy-storchaka

   closed this as completedon Jun 1, 2022

Issue actions