File: concepts-pr68828.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (35 lines) | stat: -rw-r--r-- 554 bytes parent folder | download | duplicates (2) 
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
 
// PR c++/68828
// { dg-do compile { target c++20 } }

template <typename... Types>
struct Var
{
};

struct A
{
};

template <typename T>
T
forward(T t)
{
  return static_cast<T>(t);
}

template <typename V, typename... Types, typename... Args>
bool requires_types_args(V&& v, Var<Types...>&, Args&&... args)
{
  return (true && ... &&
    requires (V&& v, Types type, Args... args) {
      foo(forward<V>(v), forward<Types>(type), 
        forward<Args>(args)...);
    }
  );
}

void bar()
{
  Var<int, char> v;
  requires_types_args(A(), v, 1, 'b');
}