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111
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1 /* PR middle-end/33088 */
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2 /* Origin: Joseph S. Myers <jsm28@gcc.gnu.org> */
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3
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4 /* { dg-do run { target i?86-*-linux* i?86-*-gnu* x86_64-*-linux* } } */
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5 /* { dg-options "-std=c99 -O -ffloat-store -lm" } */
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6
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7 #include <fenv.h>
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8 #include <stdlib.h>
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9
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10 volatile int x[1024];
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11
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12 void __attribute__((noinline))
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13 fill_stack (void)
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14 {
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15 volatile int y[1024];
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16 int i;
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17 for (i = 0; i < 1024; i++)
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18 y[i] = 0x7ff00000;
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19 for (i = 0; i < 1024; i++)
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20 x[i] = y[i];
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21 }
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22
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23 volatile _Complex double vc;
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24
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25 void __attribute__((noinline))
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26 use_complex (_Complex double c)
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27 {
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28 vc = c;
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29 }
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30
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31 double t0, t1, t2, t3;
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32
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33 #define USE_COMPLEX(X, R, C) \
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34 do { __real__ X = R; __imag__ X = C; use_complex (X); } while (0)
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35
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36 void __attribute__((noinline))
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37 use_stack (void)
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38 {
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39 _Complex double a, b, c, d;
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40 USE_COMPLEX (a, t0, t1);
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41 USE_COMPLEX (b, t1, t2);
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42 USE_COMPLEX (c, t2, t3);
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43 USE_COMPLEX (d, t3, t0);
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44 }
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45
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46 int
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47 main (void)
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48 {
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49 fill_stack ();
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50 feclearexcept (FE_INVALID);
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51 use_stack ();
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52 if (fetestexcept (FE_INVALID))
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53 abort ();
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54 exit (0);
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55 }
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