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util: Use the gcc_struct attribute for packed structures in mingw

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Actually set the packing behavior as the intended one when using this attribute,
even on mingw.

Otherwise, the default behavior is to use the ms_struct which makes the structures
use more space in some situations.

Signed-off-by: Corentin Noël <corentin.noel@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23338>
This commit is contained in:
Corentin Noël 2023-05-31 17:48:36 +02:00 • committed by Marge Bot
parent b06be7c002
commit 86532fa21d
1 changed files with 5 additions and 1 deletions
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4
src/util/macros.h
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@ -204,7 +204,11 @@ do { \
* packed, to trade off performance for space.
*/
#ifdef HAVE_FUNC_ATTRIBUTE_PACKED
# if defined(__MINGW32__) || defined(__MINGW64__)
# define PACKED __attribute__((gcc_struct,__packed__))
# else
# define PACKED __attribute__((__packed__))
# endif
#else
#define PACKED
#endif