| // -*- 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); |
| } |
| } |
