File: decltype39.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 (19 lines) | stat: -rw-r--r-- 477 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
 
// PR c++/53788
// { dg-do compile { target c++11 } }

struct t { static const bool value = true; };
struct f { static const bool value = false; };

template<typename T>
struct has_static {
  template<typename X>
  static t check(X*, decltype(T::fun())* = 0); // { dg-error "without object" }
  static f check(...);

  typedef decltype(check((T*)(0))) ret;
  static const bool value = ret::value;
};

struct test { int fun() { return 0; } };

bool b = has_static<test>::value;