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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"3.15.0a1 doesn't compile with `--disable-gil --with-assertions`: `Objects/typeobject.c:123:13: error: implicit declaration of function ‘types_world_is_stopped’ [-Wimplicit-function-declaration]`","articleBody":"# Bug report\n\n### Bug description:\n\nWhen configured via:\n\n```\n./configure --disable-gil --with-assertions\n```\n\nBuild fails:\n\n```\ngcc -c -fno-strict-overflow -Wsign-compare -g -O3 -Wall    -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal -I./Include/internal/mimalloc  -I. -I./Include    -DPy_BUILD_CORE -o Objects/typeobject.o Objects/typeobject.c\nIn file included from ./Include/internal/pycore_backoff.h:12,\n                 from ./Include/internal/pycore_code.h:11,\n                 from ./Include/internal/pycore_call.h:11,\n                 from Objects/typeobject.c:5:\nObjects/typeobject.c: In function ‘types_stop_world’:\nObjects/typeobject.c:123:13: error: implicit declaration of function ‘types_world_is_stopped’ [-Wimplicit-function-declaration]\n  123 |     assert(!types_world_is_stopped());\n      |             ^~~~~~~~~~~~~~~~~~~~~~\nmake: *** [Makefile:3309: Objects/typeobject.o] Error 1\n```\n\nReproduced with 3.15.0a1 and f262297d525e87906c5e4ab28e80284189641c9e.\n\nThe function is incorrectly guarded via `Py_DEBUG` when it's used via `assert()` which uses `!NDEBUG` instead.\n\nIntroduced in #133177, CC @nascheme.\n\n### CPython versions tested on:\n\n3.15, CPython main branch\n\n### Operating systems tested on:\n\nLinux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-140133\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/mgorny","@type":"Person","name":"mgorny"},"datePublished":"2025-10-14T17:14:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/140126/cpython/issues/140126"}