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| author | Petr Viktorin <encukou@gmail.com> | 2023-05-04 07:56:53 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-05-04 07:56:53 (GMT) |
| commit | cd9a56c2b0e14f56f2e83dd4db43c5c69a74b232 (patch) | |
| tree | ff971ebbdb11701bab003d743a6d5b928c35184f /Include/pyport.h | |
| parent | 35d273825abc319d0ecbd69110e847f6040d0cd7 (diff) | |
| download | cpython-cd9a56c2b0e14f56f2e83dd4db43c5c69a74b232.zip cpython-cd9a56c2b0e14f56f2e83dd4db43c5c69a74b232.tar.gz cpython-cd9a56c2b0e14f56f2e83dd4db43c5c69a74b232.tar.bz2 | |
gh-103509: PEP 697 -- Limited C API for Extending Opaque Types (GH-103511)
Co-authored-by: Oleg Iarygin <oleg@arhadthedev.net>
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>
Diffstat (limited to 'Include/pyport.h')
| -rw-r--r-- | Include/pyport.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index bd0ba6d..d7c6ae6 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -765,4 +765,15 @@ extern char * _getpty(int *, int, mode_t, int); #undef __bool__ #endif +// Make sure we have maximum alignment, even if the current compiler +// does not support max_align_t. Note that: +// - Autoconf reports alignment of unknown types to 0. +// - 'long double' has maximum alignment on *most* platforms, +// looks like the best we can do for pre-C11 compilers. +// - The value is tested, see test_alignof_max_align_t +#if !defined(ALIGNOF_MAX_ALIGN_T) || ALIGNOF_MAX_ALIGN_T == 0 +# undef ALIGNOF_MAX_ALIGN_T +# define ALIGNOF_MAX_ALIGN_T _Alignof(long double) +#endif + #endif /* Py_PYPORT_H */ |