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libcxx_old/test/libcxx/extensions/hash/specializations.fail.cpp

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C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <assert.h>
#include <ext/hash_map>
#include <string>
int main(int, char**)
{
assert(__gnu_cxx::hash<std::string>()(std::string()) == 0); // error
return 0;
}