File: sfinae24.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (29 lines) | stat: -rw-r--r-- 493 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
 
// PR c++/49058
// This error is not subject to SFINAE because it doesn't happen in the
// deduction context.
// { dg-do compile { target c++11 } }
// { dg-prune-output "note" }

template<typename T> T val();

struct F1
{
    void operator()();
};

template<typename F>
struct Bind
{
    template<typename R
      = decltype( val<F>()( ) )>
    R f();

    template<typename R
      = decltype( val<const F>()( ) )> // { dg-error "no match" }
    R f() const;
};

int main()
{
  Bind<F1> b;
}