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[PATCH] elf: dl-minimal malloc needs to respect fundamental alignment
- From: fweimer at redhat dot com (Florian Weimer)
- To: libc-alpha at sourceware dot org
- Date: Tue, 21 Jun 2016 13:17:02 +0200
- Subject: [PATCH] elf: dl-minimal malloc needs to respect fundamental alignment
- Authentication-results: sourceware.org; auth=none
If malloc is used instead of memalign for small alignments,
malloc needs to provide the ABI-required alignment.
2016-06-21 Florian Weimer <fweimer@redhat.com>
* elf/dl-minimal.c (malloc): Allocate with fundamental alignment.
diff --git a/elf/dl-minimal.c b/elf/dl-minimal.c
index c8a8f8d..2d7d139 100644
--- a/elf/dl-minimal.c
+++ b/elf/dl-minimal.c
@@ -27,6 +27,7 @@
#include <sys/types.h>
#include <ldsodefs.h>
#include <_itoa.h>
+#include <stdalign.h>
#include <assert.h>
@@ -90,7 +91,7 @@ __libc_memalign (size_t align, size_t n)
void * weak_function
malloc (size_t n)
{
- return __libc_memalign (sizeof (double), n);
+ return __libc_memalign (_Alignof (max_align_t), n);
}
/* We use this function occasionally since the real implementation may