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145
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1 /* { dg-do run { target hppa*-*-hpux* *-*-linux* *-*-gnu* powerpc*-*-darwin* *-*-darwin[912]* *-*-uclinux* } } */
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111
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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
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27 = (struct _Unwind_Exception*) malloc (sizeof (*exc));
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28 memset (&exc->exception_class, 0, sizeof (exc->exception_class));
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29 exc->exception_cleanup = 0;
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30
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31 #ifndef __USING_SJLJ_EXCEPTIONS__
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32 _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
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33 #else
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34 _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
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35 #endif
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36
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37 abort ();
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38 }
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39
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40 int count;
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41 char *null;
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42
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43 static void counter (void *p __attribute__((unused)))
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44 {
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45 ++count;
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46 }
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47
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48 static void handler (void *p __attribute__((unused)))
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49 {
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50 if (count != 2)
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51 abort ();
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52 exit (0);
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53 }
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54
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55 static int __attribute__((noinline)) fn5 ()
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56 {
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57 char dummy __attribute__((cleanup (counter)));
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58 force_unwind ();
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59 return 0;
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60 }
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61
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62 static void fn4 (int sig, siginfo_t *info, void *ctx)
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63 {
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64 char dummy __attribute__((cleanup (counter)));
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65 fn5 ();
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66 null = NULL;
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67 }
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68
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69 static void fn3 ()
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70 {
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71 abort ();
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72 }
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73
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74 static int __attribute__((noinline)) fn2 ()
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75 {
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76 *null = 0;
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77 fn3 ();
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78 return 0;
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79 }
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80
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81 static int __attribute__((noinline)) fn1 ()
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82 {
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83 stack_t ss;
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84 struct sigaction s;
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85
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86 ss.ss_size = 4 * sysconf (_SC_PAGESIZE);
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87 if (ss.ss_size < SIGSTKSZ)
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88 ss.ss_size = SIGSTKSZ;
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89 ss.ss_sp = malloc (ss.ss_size);
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90 if (ss.ss_sp == NULL)
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91 exit (1);
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92 ss.ss_flags = 0;
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93 if (sigaltstack (&ss, NULL) < 0)
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94 exit (1);
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95
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96 sigemptyset (&s.sa_mask);
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97 s.sa_sigaction = fn4;
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98 s.sa_flags = SA_RESETHAND | SA_ONSTACK | SA_SIGINFO;
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99 sigaction (SIGSEGV, &s, NULL);
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100 sigaction (SIGBUS, &s, NULL);
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101 fn2 ();
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102 return 0;
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103 }
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104
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105 static int __attribute__((noinline)) fn0 ()
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106 {
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107 char dummy __attribute__((cleanup (handler)));
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108 fn1 ();
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109 null = 0;
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110 return 0;
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111 }
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112
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113 int main()
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114 {
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115 fn0 ();
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116 abort ();
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117 }
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