File: sfinae6.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A7-2018-q2-5
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 539,188 kB
  • sloc: ansic: 2,739,935; cpp: 848,238; ada: 602,637; makefile: 62,919; asm: 55,635; xml: 46,238; exp: 23,020; sh: 19,616; python: 6,371; pascal: 3,889; awk: 3,278; perl: 2,691; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (31 lines) | stat: -rw-r--r-- 563 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
 
// PR c++/48113
// { dg-do compile { target c++11 } }

template<typename T> T declval();

struct tuple { };

struct F1
{
    void operator()(tuple, int);
};

typedef void (*F2)(tuple, int);

template<typename F, typename T>
struct Bind
{
    template<typename A,
             typename R = decltype( F()(declval<T&>(), A()) )>
    R f(A);

    template<typename A,
             typename R = decltype( F()(declval<volatile T&>(), A()) )>
    R f(A) volatile;
};

int main()
{
    Bind<F1, tuple>().f(0);  // OK
    Bind<F2, tuple>().f(0);  // ERROR, should be OK
}