File: member_data.compile.fail.cpp

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (46 lines) | stat: -rw-r--r-- 930 bytes parent folder | download | duplicates (5) 
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
 
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// GCC 5 does not evaluate static assertions dependent on a template parameter.
// UNSUPPORTED: gcc-5

// <functional>

// template<Returnable R, class T> unspecified mem_fn(R T::* pm);

#include <functional>
#include <cassert>

struct A
{
    double data_;
};

template <class F>
void
test(F f)
{
    {
    A a;
    f(a) = 5;
    assert(a.data_ == 5);
    A* ap = &a;
    f(ap) = 6;
    assert(a.data_ == 6);
    const A* cap = ap;
    assert(f(cap) == f(ap));
    f(cap) = 7;
    }
}

int main(int, char**)
{
    test(std::mem_fn(&A::data_));

  return 0;
}