ext/oj/compat.c in oj-2.2.0 vs ext/oj/compat.c in oj-2.2.1

@@ -50,11 +50,11 @@
 	} else {
 	    parent->classname = str;
 	}
 	parent->clen = len;
     } else {
-	VALUE	rstr = rb_str_new(str, len);
-	VALUE	rkey = rb_str_new(key, klen);
+	volatile VALUE	rstr = rb_str_new(str, len);
+	volatile VALUE	rkey = rb_str_new(key, klen);
 
 	rstr = oj_encode(rstr);
 	rkey = oj_encode(rkey);
 	if (Yes == pi->options.sym_key) {
 	    rkey = rb_str_intern(rkey);