fix bug when round_sz() rounds to 0

ssrg-vt · Apr 20, 2021 · a9d9c9e · a9d9c9e
1 parent b6865c4
commit a9d9c9e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/slimguard.c b/src/slimguard.c
@@ -371,6 +371,10 @@ void* xxmalloc(size_t sz) {
     uint8_t index = 255;
     need = round_sz(sz);
 
+    /* Can happen if sz is large enough */
+    if(!need)
+        return NULL;
+
     if (need >= (1 << 17)) {
         Debug("sz %lu\n", need);
         ret = xxmalloc_large(need, 0);