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
|
/* PR middle-end/33088 */
/* Origin: Joseph S. Myers <jsm28@gcc.gnu.org> */
/* { dg-do run { target i?86-*-linux* i?86-*-gnu* x86_64-*-linux* } } */
/* { dg-options "-std=c99 -O -ffloat-store -lm" } */
#include <fenv.h>
#include <stdlib.h>
volatile int x[1024];
void __attribute__((noinline))
fill_stack (void)
{
volatile int y[1024];
int i;
for (i = 0; i < 1024; i++)
y[i] = 0x7ff00000;
for (i = 0; i < 1024; i++)
x[i] = y[i];
}
volatile _Complex double vc;
void __attribute__((noinline))
use_complex (_Complex double c)
{
vc = c;
}
double t0, t1, t2, t3;
#define USE_COMPLEX(X, R, C) \
do { __real__ X = R; __imag__ X = C; use_complex (X); } while (0)
void __attribute__((noinline))
use_stack (void)
{
_Complex double a, b, c, d;
USE_COMPLEX (a, t0, t1);
USE_COMPLEX (b, t1, t2);
USE_COMPLEX (c, t2, t3);
USE_COMPLEX (d, t3, t0);
}
int
main (void)
{
fill_stack ();
feclearexcept (FE_INVALID);
use_stack ();
if (fetestexcept (FE_INVALID))
abort ();
exit (0);
}
|
