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1 /* { dg-do run { target hppa*-*-hpux* *-*-linux* *-*-gnu* powerpc*-*-darwin* *-*-darwin[912]* } } */
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2 /* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */
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3 /* Verify that cleanups work with exception handling through realtime signal
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4 frames on alternate stack. */
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5
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6 #include <unwind.h>
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7 #include <stdlib.h>
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8 #include <signal.h>
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9 #include <unistd.h>
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10 #include <string.h>
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11
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12 static _Unwind_Reason_Code
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13 force_unwind_stop (int version, _Unwind_Action actions,
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14 _Unwind_Exception_Class exc_class,
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15 struct _Unwind_Exception *exc_obj,
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16 struct _Unwind_Context *context,
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17 void *stop_parameter)
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18 {
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19 if (actions & _UA_END_OF_STACK)
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20 abort ();
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21 return _URC_NO_REASON;
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22 }
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23
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24 static void force_unwind ()
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25 {
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26 struct _Unwind_Exception *exc = malloc (sizeof (*exc));
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27 memset (&exc->exception_class, 0, sizeof (exc->exception_class));
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28 exc->exception_cleanup = 0;
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29
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30 #ifndef __USING_SJLJ_EXCEPTIONS__
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31 _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
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32 #else
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33 _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
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34 #endif
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35
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36 abort ();
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37 }
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38
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39 int count;
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40 char *null;
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41
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42 static void counter (void *p __attribute__((unused)))
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43 {
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44 ++count;
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45 }
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46
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47 static void handler (void *p __attribute__((unused)))
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48 {
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49 if (count != 2)
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50 abort ();
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51 exit (0);
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52 }
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53
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54 static int __attribute__((noinline)) fn5 ()
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55 {
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56 char dummy __attribute__((cleanup (counter)));
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57 force_unwind ();
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58 return 0;
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59 }
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60
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61 static void fn4 (int sig, siginfo_t *info, void *ctx)
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62 {
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63 char dummy __attribute__((cleanup (counter)));
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64 fn5 ();
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65 null = NULL;
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66 }
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67
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68 static void fn3 ()
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69 {
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70 abort ();
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71 }
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72
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73 static int __attribute__((noinline)) fn2 ()
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74 {
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75 *null = 0;
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76 fn3 ();
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77 return 0;
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78 }
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79
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80 static int __attribute__((noinline)) fn1 ()
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81 {
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82 stack_t ss;
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83 struct sigaction s;
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84
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85 ss.ss_size = 4 * sysconf (_SC_PAGESIZE);
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86 if (ss.ss_size < SIGSTKSZ)
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87 ss.ss_size = SIGSTKSZ;
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88 ss.ss_sp = malloc (ss.ss_size);
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89 if (ss.ss_sp == NULL)
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90 exit (1);
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91 ss.ss_flags = 0;
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92 if (sigaltstack (&ss, NULL) < 0)
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93 exit (1);
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94
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95 sigemptyset (&s.sa_mask);
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96 s.sa_sigaction = fn4;
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97 s.sa_flags = SA_RESETHAND | SA_ONSTACK | SA_SIGINFO;
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98 sigaction (SIGSEGV, &s, NULL);
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99 sigaction (SIGBUS, &s, NULL);
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100 fn2 ();
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101 return 0;
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102 }
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103
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104 static int __attribute__((noinline)) fn0 ()
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105 {
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106 char dummy __attribute__((cleanup (handler)));
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107 fn1 ();
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108 null = 0;
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109 return 0;
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110 }
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111
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112 int main()
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113 {
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114 fn0 ();
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115 abort ();
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116 }
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