summaryrefslogtreecommitdiff
path: root/gcc/testsuite/g++.dg/opt/nrv14.C
blob: 22526d6b59a4e9a9379108e14f678212ae33b2bf (plain)
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++/32992
// { dg-do run }
// { dg-options "-O2" }

extern "C" void abort (void);

struct A
{
  long int a1;
  long int a2;
  long int a3;
};

struct B
{
  long int f[3];
  operator A ()
  {
    union
    {
      long int t[3];
      A a;
    };
    for (int i = 0; i < 3; i++)
      t[i] = f[i];
    return a;
  }
};

int
main ()
{
  B b = { {1, 3, 5} };
  A a = b;

  if (a.a1 != b.f[0] || a.a2 != b.f[1] || a.a3 != b.f[2])
    abort ();
  return 0;
}