summaryrefslogtreecommitdiff
path: root/gcc/testsuite/g++.dg/init/init-ref1.C
blob: d0170cd18f6765431422533b1edbb17d962b90f7 (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
40
41
42
43
44
45
// Submitted by Erik Rozendaal <dlr@acm.org>
// Test case for GNATS bug 787.
// { dg-do run }

#include <stdio.h>
#include <stdlib.h>

static int calls;

int &foo (int &arg)
{
  calls++;
  arg=0;
  return arg;
}

int &identity (int &x)
{
  return x;
}

int main()
{
  int a;

  calls = 0;
  int &b = ++foo (a);
  if (calls > 1)
    abort ();
  if (&a != &b)
    abort ();
  if (a != 1)
    abort ();

  calls = 0;
  int &c = ++identity (++foo (a));
  if (calls > 1)
    abort ();
  if (&a != &c)
    abort ();
  if (a != 2)
    abort ();

  exit (0);
}