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