File: op_arrow.pass.cpp

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0~%2Brc2-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,234,976 kB
  • sloc: cpp: 7,615,454; ansic: 1,433,751; asm: 1,058,628; python: 252,043; f90: 94,632; objc: 70,743; lisp: 42,813; pascal: 18,401; sh: 10,027; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,397; javascript: 2,272; xml: 892; fortran: 770
file content (55 lines) | stat: -rw-r--r-- 1,080 bytes parent folder | download | duplicates (10) 
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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11, c++14
// <optional>

// constexpr T* optional<T>::operator->();

#include <optional>
#include <type_traits>
#include <cassert>

#include "test_macros.h"

using std::optional;

struct X
{
    int test() noexcept {return 3;}
};

struct Y
{
    constexpr int test() {return 3;}
};

constexpr int
test()
{
    optional<Y> opt{Y{}};
    return opt->test();
}

int main(int, char**)
{
    {
        std::optional<X> opt; ((void)opt);
        ASSERT_SAME_TYPE(decltype(opt.operator->()), X*);
        ASSERT_NOEXCEPT(opt.operator->());
    }
    {
        optional<X> opt(X{});
        assert(opt->test() == 3);
    }
    {
        static_assert(test() == 3, "");
    }

    return 0;
}