1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <memory>
// template <class Alloc>
// struct allocator_traits
// {
// static constexpr pointer allocate(allocator_type& a, size_type n);
// ...
// };
// UNSUPPORTED: c++03, c++11, c++14, c++17
#include <cstddef>
#include <memory>
template <class T>
struct A {
typedef T value_type;
value_type* allocate(std::size_t n);
value_type* allocate(std::size_t n, const void* p);
};
void f() {
A<int> a;
std::allocator_traits<A<int> >::allocate(a, 10); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
std::allocator_traits<A<int> >::allocate(a, 10, nullptr); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
}
|
