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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Cannot import extensions linked against `python3_d.dll` debug build on Windows","articleBody":"# Bug report\r\n\r\nBuild a debug version of CPython on Windows.\r\nBuild an an extension module linked against this debug CPython's `python3_d.dll`.\r\n\r\nThis crashes at runtime with the following error:\r\n\r\n```\r\nImportError: Module use of python3_d.dll conflicts with this version of Python.\r\n```\r\n\r\nThis originates from https://github.com/python/cpython/blob/7a253103d4c64fcca4c0939a584c2028d8da6829/Python/dynload_win.c#L311-L330\r\n\r\nIt looks like this code doesn't account for the possibility of linking against `python3_d.dll` when using a debug build.\r\n\r\n# Your environment\r\n\r\n- CPython versions tested on: main branch, 7a253103d4\r\n- Operating system and architecture: Windows 12 amd64\r\n\r\nOriginally reported to me in https://github.com/PyO3/pyo3/issues/2780\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-101615\n* gh-101690\n* gh-101691\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/davidhewitt","@type":"Person","name":"davidhewitt"},"datePublished":"2023-02-06T20:25:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/101614/cpython/issues/101614"}