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barry-scott opened this issue Feb 22, 2025 · 3 comments
Closed

Crash with locals() used in list comprehension #130451

barry-scott opened this issue Feb 22, 2025 · 3 comments
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interpreter-core (Objects, Python, Grammar, and Parser dirs) type-crash A hard crash of the interpreter, possibly with a core dump

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@barry-scott
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barry-scott commented Feb 22, 2025 •
edited by github-actions bot
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Crash report

What happened?

def f():
    lambda: k
    k = 1
    print([locals() for k in [0]])

f()

Was reported on https://discuss.python.org/t/segfault-in-calling-locals-within-list-comprehension/81681
Tested on macOS and Fedora 41.

CPython versions tested on:

3.13

Operating systems tested on:

macOS

Output from running 'python -VV' on the command line:

Python 3.13.0 (v3.13.0:60403a5409f, Oct 7 2024, 00:37:40) [Clang 15.0.0 (clang-1500.3.9.4)]
@barry-scott barry-scott added the type-crash A hard crash of the interpreter, possibly with a core dump label Feb 22, 2025
@picnixz picnixz added the interpreter-core (Objects, Python, Grammar, and Parser dirs) label Feb 22, 2025
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picnixz commented Feb 22, 2025

cc @carljm (not sure if it wasn't already a known issue)

@picnixz picnixz changed the title segv with locals() using in list comprehension PyCell_Check() assertion fails with locals() used in list comprehension Feb 22, 2025
@sergey-miryanov
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It seems to be fixed #130235

@picnixz
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picnixz commented Feb 22, 2025

Actually, it seems to have been solved. The PyCell_Check assertion failed because of something else I think.

@picnixz picnixz closed this as completed Feb 22, 2025
@picnixz picnixz changed the title PyCell_Check() assertion fails with locals() used in list comprehension Crash with locals() used in list comprehension Feb 22, 2025
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interpreter-core (Objects, Python, Grammar, and Parser dirs) type-crash A hard crash of the interpreter, possibly with a core dump
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