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| author | Olivier Hainque <hainque@adacore.com> | 2022-01-28 16:34:50 +0000 |
|---|---|---|
| committer | Olivier Hainque <hainque@adacore.com> | 2022-10-07 06:51:53 +0000 |
| commit | 8307b7d6d0335da952a87bf56015f830072ac431 (patch) | |
| tree | 80bfb2fcae89cc3c87093de9c6d9b0972c1b5705 /gcc/ginclude | |
| parent | 8a9e92b249c9c5a5371588b1e939a90a677b4fd3 (diff) | |
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undef offsetof before defining it in stddef.h
This prevents redefinition warnings by -Wsystem-headers on
OSses where system headers happen to provide a definition of
their own, such as VxWorks.
2022-02-15 Olivier Hainque <hainque@adacore.com>
gcc/
* ginclude/stddef.h: #undef offsetof before #define.
Diffstat (limited to 'gcc/ginclude')
| -rw-r--r-- | gcc/ginclude/stddef.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h index 3d29213..2767edf 100644 --- a/gcc/ginclude/stddef.h +++ b/gcc/ginclude/stddef.h @@ -412,6 +412,7 @@ typedef __WINT_TYPE__ wint_t; #ifdef _STDDEF_H /* Offset of member MEMBER in a struct of type TYPE. */ +#undef offsetof /* in case a system header has defined it. */ #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ |