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code.h uses MS-only C++ extensions

zooba

Issue #100222 added a struct to Include/cpython/code.h (which is included by default by Python.h) that is not compliant C++:

typedef union {
    uint16_t cache;
    struct {
        uint8_t opcode;
        uint8_t oparg;
    };
} _Py_CODEUNIT;

The struct member requires a name, as only anonymous structs are currently permitted in standard C++.

(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 <Python.h>, which is currently broken.)

Linked PRs