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-rw-r--r--malloc/malloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c
index da834d2663..4d1773a3b8 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -2944,7 +2944,7 @@ static Void_t* sYSMALLOc(nb, av) INTERNAL_SIZE_T nb; mstate av;
     if (brk == old_end && snd_brk == (char*)(MORECORE_FAILURE))
       set_head(old_top, (size + old_size) | PREV_INUSE);
 
-    else if (old_size && brk < old_end) {
+    else if (contiguous(av) && old_size && brk < old_end) {
       /* Oops!  Someone else killed our space..  Can't touch anything.  */
       assert(0);
     }