| /* { dg-do run { target *-*-linux* powerpc*-*-darwin* } } */ |
| /* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */ |
| /* Verify that cleanups work with exception handling through realtime signal |
| frames on alternate stack. */ |
| |
| #include <unwind.h> |
| #include <stdlib.h> |
| #include <signal.h> |
| #include <unistd.h> |
| |
| static _Unwind_Reason_Code |
| force_unwind_stop (int version, _Unwind_Action actions, |
| _Unwind_Exception_Class exc_class, |
| struct _Unwind_Exception *exc_obj, |
| struct _Unwind_Context *context, |
| void *stop_parameter) |
| { |
| if (actions & _UA_END_OF_STACK) |
| abort (); |
| return _URC_NO_REASON; |
| } |
| |
| static void force_unwind () |
| { |
| struct _Unwind_Exception *exc = malloc (sizeof (*exc)); |
| exc->exception_class = 0; |
| exc->exception_cleanup = 0; |
| |
| #ifndef __USING_SJLJ_EXCEPTIONS__ |
| _Unwind_ForcedUnwind (exc, force_unwind_stop, 0); |
| #else |
| _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0); |
| #endif |
| |
| abort (); |
| } |
| |
| int count; |
| char *null; |
| |
| static void counter (void *p __attribute__((unused))) |
| { |
| ++count; |
| } |
| |
| static void handler (void *p __attribute__((unused))) |
| { |
| if (count != 2) |
| abort (); |
| exit (0); |
| } |
| |
| static int __attribute__((noinline)) fn5 () |
| { |
| char dummy __attribute__((cleanup (counter))); |
| force_unwind (); |
| return 0; |
| } |
| |
| static void fn4 (int sig, siginfo_t *info, void *ctx) |
| { |
| char dummy __attribute__((cleanup (counter))); |
| fn5 (); |
| null = NULL; |
| } |
| |
| static void fn3 () |
| { |
| abort (); |
| } |
| |
| static int __attribute__((noinline)) fn2 () |
| { |
| *null = 0; |
| fn3 (); |
| return 0; |
| } |
| |
| static int __attribute__((noinline)) fn1 () |
| { |
| stack_t ss; |
| struct sigaction s; |
| |
| ss.ss_size = 4 * sysconf (_SC_PAGESIZE); |
| if (ss.ss_size < SIGSTKSZ) |
| ss.ss_size = SIGSTKSZ; |
| ss.ss_sp = malloc (ss.ss_size); |
| if (ss.ss_sp == NULL) |
| exit (1); |
| ss.ss_flags = 0; |
| if (sigaltstack (&ss, NULL) < 0) |
| exit (1); |
| |
| sigemptyset (&s.sa_mask); |
| s.sa_sigaction = fn4; |
| s.sa_flags = SA_RESETHAND | SA_ONSTACK | SA_SIGINFO; |
| sigaction (SIGSEGV, &s, NULL); |
| sigaction (SIGBUS, &s, NULL); |
| fn2 (); |
| return 0; |
| } |
| |
| static int __attribute__((noinline)) fn0 () |
| { |
| char dummy __attribute__((cleanup (handler))); |
| fn1 (); |
| null = 0; |
| return 0; |
| } |
| |
| int main() |
| { |
| fn0 (); |
| abort (); |
| } |