fix simple_malloc malloc(0) behavior not to return non-unique pointers

diff --git a/src/malloc/__simple_malloc.c b/src/malloc/__simple_malloc.c
index 61cd9fc..c029342 100644 (file)
--- a/src/malloc/__simple_malloc.c
+++ b/src/malloc/__simple_malloc.c
@@ -15,6 +15,7 @@ void *__simple_malloc(size_t n)
        static int lock;
        size_t align=1;
 
+       if (!n) return 0;
        if (n > SIZE_MAX/2) goto toobig;
 
        while (align<n && align<ALIGN)