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 // [[nodiscard]] void* operator new[](std::size_t);
10 // [[nodiscard]] void* operator new[](std::size_t, std::nothrow_t const&);
11 // [[nodiscard]] void* operator new[](std::size_t, std::align_val_t);
12 // [[nodiscard]] void* operator new[](std::size_t, std::align_val_t, std::nothrow_t const&);
13
14 // [[nodiscard]] is not supported at all in c++03
15 // UNSUPPORTED: c++03
16
17 // [[nodiscard]] enabled before C++20 in libc++ as an extension
18 // UNSUPPORTED: (c++11 || c++14 || c++17) && !stdlib=libc++
19
20 // Libc++ when built for z/OS doesn't contain the aligned allocation functions,
21 // nor does the dynamic library shipped with z/OS.
22 // XFAIL: target={{.+}}-zos{{.*}}
23
24 #include <new>
25
26 #include "test_macros.h"
27
f()28 void f() {
29 ::operator new[](4); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
30 ::operator new[](4, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
31
32 #if TEST_STD_VER >= 17
33 ::operator new[](4, std::align_val_t{4}); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
34 ::operator new[](4, std::align_val_t{4}, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
35 #endif
36 }
37