ext/yajl/yajl_buf.c in yajl-ruby-1.4.2 vs ext/yajl/yajl_buf.c in yajl-ruby-1.4.3

@@ -114,13 +114,13 @@
         return yajl_buf_ok;
     }
 
     need = buf->len;
 
-    while (want >= (need - buf->used)) need <<= 1;
+    while (want >= (need - buf->used) && need > 0) need <<= 1;
 
     // Check for overflow
-    if (need < buf->used) {
+    if (need < buf->used || need == 0) {
         return yajl_buf_set_error(buf, yajl_buf_overflow);
     }
 
     if (need != buf->len) {
         buf->data = (unsigned char *) YA_REALLOC(buf->alloc, buf->data, need);