File: static_assert1.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 (31 lines) | stat: -rw-r--r-- 610 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
 
// { dg-do compile }
// { dg-options "-std=gnu++14 -pedantic" }

template<typename T>
  struct is_float
  {
    static constexpr bool value = false;
  };

template<>
  struct is_float<float>
  {
    static constexpr bool value = true;
  };

template<typename T>
  T
  float_thing(T __x)
  {
    static_assert(is_float<T>::value, ""); // { dg-error "static assertion failed" }
    static_assert(is_float<T>::value); // { dg-error "static assertion failed" }
    return T();
  }

int
main()
{
  float_thing(1);
}

// { dg-warning "'static_assert' without a message only available with " "" { target *-*-* } 21 }