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-rw-r--r--malloc/malloc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c
index e096f00eeb..09085e81ad 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -1263,8 +1263,9 @@ static void free_atfork();
#define request2size(req, nb) \
((nb = (req) + (SIZE_SZ + MALLOC_ALIGN_MASK)),\
- ((long)nb <= 0 ? 1 : ((nb < (MINSIZE + MALLOC_ALIGN_MASK) ? (nb = MINSIZE) :\
- (nb &= ~MALLOC_ALIGN_MASK)), 0)))
+ ((long)nb <= 0 || nb < (INTERNAL_SIZE_T) (req) \
+ ? 1 : ((nb < (MINSIZE + MALLOC_ALIGN_MASK) \
+ ? (nb = MINSIZE) : (nb &= ~MALLOC_ALIGN_MASK)), 0)))
/* Check if m has acceptable alignment */