OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [20000917-1.c] - Blame information for rev 688

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 688 jeremybenn
/* This bug exists in gcc-2.95, egcs-1.1.2, gcc-2.7.2 and probably
2
   every other version as well.  */
3
 
4
typedef struct int3 { int a, b, c; } int3;
5
 
6
int3
7
one (void)
8
{
9
  return (int3) { 1, 1, 1 };
10
}
11
 
12
int3
13
zero (void)
14
{
15
  return (int3) { 0, 0, 0 };
16
}
17
 
18
int
19
main (void)
20
{
21
  int3 a;
22
 
23
  /* gcc allocates a temporary for the inner expression statement
24
     to store the return value of `one'.
25
 
26
     gcc frees the temporaries for the inner expression statement.
27
 
28
     gcc realloates the same temporary slot to store the return
29
     value of `zero'.
30
 
31
     gcc expands the call to zero ahead of the expansion of the
32
     statement expressions.  The temporary gets the value of `zero'.
33
 
34
     gcc expands statement expressions and the stale temporary is
35
     clobbered with the value of `one'.  The bad value is copied from
36
     the temporary into *&a.  */
37
 
38
  *({ ({ one (); &a; }); }) = zero ();
39
  if (a.a && a.b && a.c)
40
    abort ();
41
  exit (0);
42
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.