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Try again for FreeBSD errno_aligned_allocs on x86

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Harder than I thought to trigger ENOMEM on x86, so just fake it.
This commit is contained in:
Paul Floyd 2022-05-10 21:01:01 +02:00
parent d7944c09f5
commit 277f10d523
1 changed files with 24 additions and 2 deletions
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26
memcheck/tests/freebsd/errno_aligned_allocs.c
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@ -23,7 +23,21 @@ int main(void)
res = posix_memalign((void**)&p, 40, 160);
assert(p == NULL && res == EINVAL);
// too big
res = posix_memalign((void**)&p, 16, (sizeof(size_t) == 8) ? 1UL<<48 : 1UL<<31);
if (sizeof(size_t) == 8)
{
res = posix_memalign((void**)&p, 16, 1UL<<48);
}
else
{
// on x86 it's hard to actually get ENOMEM
// if we ask for more than 2Gbytes the fishy
// detector will kick in and not try to allocate
// less than 2Gbytes and it's likely to succeed
// (at least on a machine just tunning VG regtests)
// so fake it
p = NULL;
res = ENOMEM;
}
assert(p == NULL && res == ENOMEM);
errno = 0;
@ -42,7 +56,15 @@ int main(void)
assert(p == NULL && errno == EINVAL);
errno = 0;
// too big
p = aligned_alloc(16, 1UL<<48);
if (sizeof(size_t) == 8)
{
p = aligned_alloc(16, 1UL<<48);
}
else
{
p = NULL;
errno = ENOMEM;
}
assert(p == NULL && errno == ENOMEM);
}