blob: a9383e6558850a67a72f8daed329bc4103cba48c (
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
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* PR tree-optimization/92765 - wrong code for strcmp of a union member
{ dg-do run }
{ dg-options "-O2 -Wall" } */
#include "strlenopt.h"
__attribute__((noipa)) int
copy (char *x, int y)
{
if (y == 0)
strcpy (x, "abcd");
return y;
}
__attribute__((noipa)) char *
alloc_2_copy_compare (int x)
{
char *p;
if (x)
p = malloc (4);
else
p = calloc (16, 1);
char *q = p + 2;
if (copy (q, x))
return p;
if (strcmp (q, "abcd") != 0)
abort ();
return p;
}
char a5[5], a6[6], a7[7];
__attribute__((noipa)) char *
decl_3_copy_compare (int x)
{
char *p = x < 0 ? a5 : 0 < x ? a6 : a7;
char *q = p + 1;
if (copy (q, x))
return p;
if (strcmp (q, "abcd") != 0)
abort ();
return p;
}
int main ()
{
free (alloc_2_copy_compare (0));
free (alloc_2_copy_compare (1));
decl_3_copy_compare (-1);
decl_3_copy_compare (0);
decl_3_copy_compare (1);
}
|
