Below is a listing of the raise() function from MSVC CRT:
int __cdecl raise (
int signum
)
{
[...]
/*
* If the current action is SIG_IGN, just return
*/
if ( sigact == SIG_IGN )
return(0);
/*
* If the current action is SIG_DFL, take the default action
*/
if ( sigact == SIG_DFL ) {
/*
* The current default action for all of the supported
* signals is to terminate with an exit code of 3.
*/
_exit(3);
}
[...]
}
And also the listing of the abort() :
void __cdecl abort (
void
)
{
_PHNDLR sigabrt_act = SIG_DFL;
if (__abort_behavior & _WRITE_ABORT_MSG)
{
/* write the abort message */
_NMSG_WRITE(_RT_ABORT);
}
/* Check if the user installed a handler for SIGABRT.
* We need to read the user handler atomically in the case
* another thread is aborting while we change the signal
* handler.
*/
sigabrt_act = __get_sigabrt();
if (sigabrt_act != SIG_DFL)
{
raise(SIGABRT);
}
/* If there is no user handler for SIGABRT or if the user
* handler returns, then exit from the program anyway
*/
[...]
/* If we don't want to call ReportFault, then we call _exit(3), which
is the
* same as invoking the default handler for SIGABRT
*/
_exit(3);
}
Farid.
