nodiscard_extensions.pass.cpp (980B)
1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 // Test that entities declared [[nodiscard]] as at extension by libc++, are 12 // only actually declared such when _LIBCPP_ENABLE_NODISCARD is specified. 13 14 // This test intentionally leaks memory, so it is unsupported under ASAN. 15 // UNSUPPORTED: asan 16 17 // All entities to which libc++ applies [[nodiscard]] as an extension should 18 // be tested here and in nodiscard_extensions.fail.cpp. They should also 19 // be listed in `UsingLibcxx.rst` in the documentation for the extension. 20 21 #include <memory> 22 23 #include "test_macros.h" 24 25 int main() { 26 { 27 std::get_temporary_buffer<int>(1); // intentional memory leak. 28 } 29 }