File: is-constant-evaluated8.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 (19 lines) | stat: -rw-r--r-- 989 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
 
// { dg-do compile { target c++11 } }
// { dg-options "" }

namespace std {
  constexpr inline bool
  is_constant_evaluated () noexcept
  {
    return __builtin_is_constant_evaluated ();
  }
}

struct A { explicit (!__builtin_is_constant_evaluated ()) A (int); };	// { dg-warning "'explicit\\(bool\\)' only available with" "" { target c++17_down } }
struct B { explicit (!std::is_constant_evaluated ()) B (int); };	// { dg-warning "'explicit\\(bool\\)' only available with" "" { target c++17_down } }
struct C { explicit (__builtin_is_constant_evaluated ()) C (int); };	// { dg-warning "'explicit\\(bool\\)' only available with" "" { target c++17_down } }
struct D { explicit (std::is_constant_evaluated ()) D (int); };		// { dg-warning "'explicit\\(bool\\)' only available with" "" { target c++17_down } }
A a = 1;
B b = 2;
C c = 3;	// { dg-error "conversion from 'int' to non-scalar type 'C' requested" }
D d = 4;	// { dg-error "conversion from 'int' to non-scalar type 'D' requested" }