1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include <assert.h>
10 #include <ext/hash_map>
11 #include <string>
12 
main(int,char **)13 int main(int, char**)
14 {
15     assert(__gnu_cxx::hash<std::string>()(std::string()) == 0);  // error
16 
17   return 0;
18 }
19