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