1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03 10 11 // check that <array> functions are marked [[nodiscard]] 12 13 // clang-format off 14 15 #include <new> 16 17 #include "test_macros.h" 18 19 void test() { 20 ::operator new(0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 21 ::operator new(0, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 22 ::operator new[](0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 23 ::operator new[](0, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 24 #if _LIBCPP_HAS_ALIGNED_ALLOCATION 25 ::operator new(0, std::align_val_t{1}); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 26 ::operator new(0, std::align_val_t{1}, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 27 ::operator new[](0, std::align_val_t{1}); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 28 ::operator new[](0, std::align_val_t{1}, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 29 #endif // _LIBCPP_HAS_ALIGNED_ALLOCATION 30 31 #if TEST_STD_VER >= 17 32 int* ptr = nullptr; 33 std::launder(ptr); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 34 #endif 35 } 36