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111
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1 /* PR middle-end/32758 */
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2 /* HP-UX libunwind.so doesn't provide _UA_END_OF_STACK */
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3 /* { dg-do run } */
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4 /* { dg-options "-O2 -fexceptions" } */
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5 /* { dg-skip-if "" { "ia64-*-hpux11.*" } } */
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6 /* { dg-skip-if "" { ! nonlocal_goto } } */
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145
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7 /* { dg-require-effective-target exceptions } */
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111
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8 /* Verify unwind info in presence of alloca. */
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9
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10 #include <unwind.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13
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14 static _Unwind_Reason_Code
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15 force_unwind_stop (int version, _Unwind_Action actions,
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16 _Unwind_Exception_Class exc_class,
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17 struct _Unwind_Exception *exc_obj,
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18 struct _Unwind_Context *context,
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19 void *stop_parameter)
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20 {
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21 if (actions & _UA_END_OF_STACK)
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22 abort ();
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23 return _URC_NO_REASON;
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24 }
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25
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26 static void force_unwind (void)
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27 {
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28 struct _Unwind_Exception *exc = malloc (sizeof (*exc));
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29 memset (&exc->exception_class, 0, sizeof (exc->exception_class));
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30 exc->exception_cleanup = 0;
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31
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32 #ifndef __USING_SJLJ_EXCEPTIONS__
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33 _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
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34 #else
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35 _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
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36 #endif
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37
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38 abort ();
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39 }
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40
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41 __attribute__((noinline))
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42 void foo (void *x __attribute__((unused)))
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43 {
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44 force_unwind ();
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45 }
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46
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47 __attribute__((noinline))
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48 int bar (unsigned int x)
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49 {
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50 void *y = __builtin_alloca (x);
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51 foo (y);
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52 return 1;
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53 }
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54
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55 static void handler (void *p __attribute__((unused)))
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56 {
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57 exit (0);
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58 }
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59
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60 __attribute__((noinline))
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61 static void doit ()
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62 {
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63 char dummy __attribute__((cleanup (handler)));
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64 bar (1024);
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65 }
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66
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67 int main ()
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68 {
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69 doit ();
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70 abort ();
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71 }
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