File: bit-cast7.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 (39 lines) | stat: -rw-r--r-- 684 bytes parent folder | download 
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
32
33
34
35
36
37
38
39
 
// PR c++/98193
// { dg-do compile { target c++20 } }

template <typename To, typename From>
constexpr To
bit_cast (const From &from)
{
  return __builtin_bit_cast (To, from);
}

struct J
{
  long int a, b : 11, h;
};

struct K
{
  long int a, b : 11, c;
  constexpr bool operator == (const K &x) const
  {
    return a == x.a && b == x.b && c == x.c;
  }
};

struct L
{
  long long int a, b : 11, h;
};
struct M
{
  long long int a, b : 11, c;
  constexpr bool operator == (const M &x) const
  {
    return a == x.a && b == x.b && c == x.c;
  }
};

static_assert (bit_cast <K> (J{}) == K{}, "");
static_assert (bit_cast <M> (L{0x0feedbacdeadbeefLL}) == M{0x0feedbacdeadbeefLL}, "");