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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// GCC versions prior to 7.0 don't provide the required [[nodiscard]] attribute.
// UNSUPPORTED: gcc-4, gcc-5, gcc-6
// Test that entities declared [[nodiscard]] as at extension by libc++, are
// only actually declared such when _LIBCPP_ENABLE_NODISCARD is specified.
// All entities to which libc++ applies [[nodiscard]] as an extension should
// be tested here and in nodiscard_extensions.pass.cpp. They should also
// be listed in `UsingLibcxx.rst` in the documentation for the extension.
// MODULES_DEFINES: _LIBCPP_ENABLE_NODISCARD
#define _LIBCPP_ENABLE_NODISCARD
#include <memory>
#include "test_macros.h"
int main() {
{
// expected-error-re@+1 {{ignoring return value of function declared with {{'nodiscard'|warn_unused_result}} attribute}}
std::get_temporary_buffer<int>(1);
}
}