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-rw-r--r--libc/stdlib/malloc/memalign.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libc/stdlib/malloc/memalign.c b/libc/stdlib/malloc/memalign.c
index 665f20cfb..54f6dbc6c 100644
--- a/libc/stdlib/malloc/memalign.c
+++ b/libc/stdlib/malloc/memalign.c
@@ -11,6 +11,7 @@
* Written by Miles Bader <miles@gnu.org>
*/
+#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
@@ -38,6 +39,11 @@ memalign (size_t alignment, size_t size)
unsigned long tot_addr, tot_end_addr, addr, end_addr;
struct heap_free_area **heap = &__malloc_heap;
+ if (unlikely(size > PTRDIFF_MAX)) {
+ __set_errno(ENOMEM);
+ return NULL;
+ }
+
/* Make SIZE something we like. */
size = HEAP_ADJUST_SIZE (size);