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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"code.h uses MS-only C++ extensions","articleBody":"Issue #100222 added a struct to `Include/cpython/code.h` (which is included by default by `Python.h`) that is not compliant C++:\r\n\r\n```\r\ntypedef union {\r\n    uint16_t cache;\r\n    struct {\r\n        uint8_t opcode;\r\n        uint8_t oparg;\r\n    };\r\n} _Py_CODEUNIT;\r\n```\r\n\r\nThe struct member requires a name, as only anonymous structs are currently permitted in standard C++.\r\n\r\n(And since the original issue invokes PEP 7, I'll do the same and point out that \"The public C API should be compatible with C++\". The intention of this clause is that standard C++ can `#include \u003cPython.h\u003e`, which is currently broken.)\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-101909\n* gh-101912\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/zooba","@type":"Person","name":"zooba"},"datePublished":"2023-02-14T15:38:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/101907/cpython/issues/101907"}