File: decltype58.C

package info (click to toggle)
gcc-arm-none-eabi 15%3A7-2018-q2-6
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 539,240 kB
  • sloc: ansic: 2,739,935; cpp: 848,238; ada: 602,637; makefile: 62,919; asm: 55,632; 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 (24 lines) | stat: -rw-r--r-- 271 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
 
// PR c++/52875
// { dg-do compile { target c++11 } }

struct A
{
  friend void swap(A&,A&)  {}
};

class B
{
  A a;
    
  template <class T>
  friend auto swap(T& x, T& y) -> decltype(swap(x.a,y.a))
  {
    swap(x.a,y.a);
  }
};

int main()
{
  B x, y;
  swap(x, y);
}