Attached patch OK?
From c189de0294c89cb87313748be5c5555e0aa8045e Mon Sep 17 00:00:00 2001 From: Jonathan Yong <10wa...@gmail.com> Date: Sun, 1 Nov 2020 02:22:39 +0000 Subject: [PATCH] stddef.h: sync max_align_t definition with newer gcc
Related to: https://sourceforge.net/p/mingw-w64/bugs/778/ https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=973495 Signed-off-by: Jonathan Yong <10wa...@gmail.com> --- mingw-w64-headers/crt/stddef.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mingw-w64-headers/crt/stddef.h b/mingw-w64-headers/crt/stddef.h index 03c8ebf8..15fc79c5 100644 --- a/mingw-w64-headers/crt/stddef.h +++ b/mingw-w64-headers/crt/stddef.h @@ -424,6 +424,15 @@ typedef __WCHAR_TYPE__ wchar_t; typedef struct { long long __max_align_ll __attribute__((__aligned__(__alignof__(long long)))); long double __max_align_ld __attribute__((__aligned__(__alignof__(long double)))); + /* _Float128 is defined as a basic type, so max_align_t must be + sufficiently aligned for it. This code must work in C++, so we + use __float128 here; that is only available on some + architectures, but only on i386 is extra alignment needed for + __float128. */ +/* compiler probably knows __float128 if __SIZEOF_FLOAT128__ is defined */ +#if defined(__i386__) && defined (__SIZEOF_FLOAT128__) + __float128 __max_align_f128 __attribute__((__aligned__(__alignof(__float128)))); +#endif } max_align_t; #endif #endif /* C11 or C++11. */ -- 2.29.2
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