Crash with locals() used in list comprehension

[barry-scott]

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)]

[picnixz]

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

[sergey-miryanov]

It seems to be fixed #130235

[picnixz]

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