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Only assert about x86_64 struct sizes if ABI is LP64, not x32

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The __x86_64__ macro identifies a CPU family, and is unfortunately not
enough to identify a concrete ABI.

The normal x86_64 ABI that is used by practical Linux distributions is
LP64 (i.e. 32-bit int, and 64-bit long and pointer), and defines
__x86_64__ and __LP64__.

x32 is a niche ILP32 ABI (i.e. 32-bit int, long and pointer) for x86_64
CPUs, which has different struct sizes due to sizeof(long) and
sizeof(void *) being smaller. It defines __x86_64__ and __ILP32__.

Signed-off-by: Simon McVittie <smcv@debian.org>
This commit is contained in:
Simon McVittie 2020-09-07 14:01:58 +01:00 • committed by Wim Taymans
parent b8c58c74d8
commit a652edce0a
7 changed files with 10 additions and 10 deletions
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2
spa/tests/test-utils.c
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@ -63,7 +63,7 @@ static void test_abi(void)
spa_assert(f.denom == 125);
}
#if defined(__x86_64__)
#if defined(__x86_64__) && defined(__LP64__)
/* dict */
spa_assert(sizeof(struct spa_dict_item) == 16);
spa_assert(sizeof(struct spa_dict) == 16);