move alignment check from aligned_alloc to posix_memalign

C11 has no requirement that the alignment be a multiple of
sizeof(void*), and in fact seems to require any "valid alignment
supported by the implementation" to work. since the alignment of char
is 1 and thus a valid alignment, an alignment argument of 1 should be
accepted.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/malloc/posix_memalign.c b/src/malloc/posix_memalign.c
index 42cf2740..ad4d8f47 100644
--- a/src/malloc/posix_memalign.c
+++ b/src/malloc/posix_memalign.c
@@ -3,6 +3,7 @@
 
 int posix_memalign(void **res, size_t align, size_t len)
 {
+	if (align < sizeof(void *)) return EINVAL;
 	void *mem = aligned_alloc(align, len);
 	if (!mem) return errno;
 	*res = mem;