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111
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1 /* PR c/70093 */
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2 /* { dg-do compile } */
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3 /* { dg-options "" } */
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4 /* { dg-require-effective-target alloca } */
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5
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6 void __attribute__((noinline, noclone))
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7 foo (int n)
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8 {
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9 struct S { int a[n]; };
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10
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11 struct S __attribute__((noreturn))
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12 fn (void)
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13 {
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14 __builtin_abort ();
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15 }
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16
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17 auto struct S __attribute__((noreturn))
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18 fn2 (void)
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19 {
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20 __builtin_abort ();
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21 }
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22
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23 struct S x;
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24 __typeof__ (fn ()) *p = &x;
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25 switch (n)
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26 {
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27 case 1:
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28 fn ();
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29 break;
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30 case 2:
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31 fn2 ();
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32 break;
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33 case 3:
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34 x = fn ();
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35 if (x.a[0] != 42)
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36 __builtin_abort ();
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37 break;
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38 case 4:
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39 if (fn ().a[0] != 42)
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40 __builtin_abort ();
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41 break;
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42 case 5:
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43 if (p->a[0] != 42)
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44 __builtin_abort ();
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45 break;
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46 case 6:
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47 if (fn2 ().a[0] != 42)
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48 __builtin_abort ();
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49 break;
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50 }
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51 }
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52
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53 int
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54 main (void)
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55 {
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56 foo (1);
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57 }
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