mallocng/aligned_alloc: check for malloc failure

With mallocng, calling posix_memalign() or aligned_alloc() will
SIGSEGV if the internal malloc() call returns NULL. This does not
occur with oldmalloc, which explicitly checks for allocation failure.

diff --git a/src/malloc/mallocng/aligned_alloc.c b/src/malloc/mallocng/aligned_alloc.c
index 3411689..e0862a8 100644 (file)
--- a/src/malloc/mallocng/aligned_alloc.c
+++ b/src/malloc/mallocng/aligned_alloc.c
@@ -22,6 +22,9 @@ void *aligned_alloc(size_t align, size_t len)
        if (align <= UNIT) align = UNIT;
 
        unsigned char *p = malloc(len + align - UNIT);
+       if (!p)
+               return 0;
+
        struct meta *g = get_meta(p);
        int idx = get_slot_index(p);
        size_t stride = get_stride(g);