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/* { dg-do run { target i?86-*-linux* x86_64-*-linux* ia64-*-linux* alpha*-*-linux* powerpc*-*-linux* s390*-*-linux* sparc*-*-linux* mips*-*-linux* } } */
/* { dg-options "-fasynchronous-unwind-tables -fexceptions -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_ONESHOT | SA_ONSTACK | SA_SIGINFO;
sigaction (SIGSEGV, &s, NULL);
fn2 ();
return 0;
}
static int __attribute__((noinline)) fn0 ()
{
char dummy __attribute__((cleanup (handler)));
fn1 ();
null = 0;
return 0;
}
int main()
{
fn0 ();
abort ();
}
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