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gh-105059: Fix MSCV compiler warning on PyObject union (#107239)
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Use pragma to ignore the MSCV compiler warning on the PyObject
nameless union.
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vstinner authored Jul 25, 2023
1 parent 1a3faba commit 1c8fe9b
Showing 1 changed file with 11 additions and 0 deletions.
11 changes: 11 additions & 0 deletions Include/object.h
Original file line number Diff line number Diff line change
Expand Up @@ -165,17 +165,28 @@ check by comparing the reference count field to the immortality reference count.
*/
struct _object {
_PyObject_HEAD_EXTRA

#if (defined(__GNUC__) || defined(__clang__)) \
&& !(defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L)
// On C99 and older, anonymous union is a GCC and clang extension
__extension__
#endif
#ifdef _MSC_VER
// Ignore MSC warning C4201: "nonstandard extension used:
// nameless struct/union"
__pragma(warning(push))
__pragma(warning(disable: 4201))
#endif
union {
Py_ssize_t ob_refcnt;
#if SIZEOF_VOID_P > 4
PY_UINT32_T ob_refcnt_split[2];
#endif
};
#ifdef _MSC_VER
__pragma(warning(pop))
#endif

PyTypeObject *ob_type;
};

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