René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"SIGSEGV with generators after direct change in gi_frame","articleBody":"# Crash report\r\n\r\n### What happened?\r\n\r\nThere is a segmentation fault with simple code snippet:\r\n```python\r\ng = (x for x in range(10))\r\ng.gi_frame.f_locals['.0'] = range(20)\r\nlist(g)\r\nprint(\"No segfault\")\r\n```\r\nThere is a SIGSEGV on my linux machine (Debian GNU/Linux 10) with both main branch Python and 3.13 version.\r\nMessage \"No segfault\" is printed on Python 3.7.3 (default, Oct 31 2022, 14:04:00).\r\n\r\n### CPython versions tested on:\r\n\r\n3.13, CPython main branch\r\n\r\n### Operating systems tested on:\r\n\r\nLinux\r\n\r\n### Output from running 'python -VV' on the command line:\r\n\r\nPython 3.14.0a0 (heads/peg_parser_remove_redundant_functions:e1b62e5cf79, Oct  3 2024, 14:38:46) [GCC 8.3.0]\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-125051\r\n* gh-125178\r\n* gh-125846\n* gh-126408\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/efimov-mikhail","@type":"Person","name":"efimov-mikhail"},"datePublished":"2024-10-07T10:56:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/125038/cpython/issues/125038"}