newlib-cygwin/winsup/testsuite/winsup.api/pthread/mainthreadexits.c

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#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
static void * Thread (void *);
static pthread_t main_thread;
static pthread_t secondThread;
static int result = 2;
int main(void)
{
main_thread = pthread_self ();
if (pthread_create (&secondThread, NULL, Thread, NULL))
exit (1);
sleep (5);
pthread_exit (&result);
/* If pthread_exit doesm't (which would be a bug) then we do */
return 1;
}
static void * Thread (void *not_used)
{
void *myresult;
/* We should be able to join this */
if (pthread_join (main_thread, &myresult))
exit (1);
if (*(int *)myresult != 2)
exit (1);
exit (0);
}
/*
This valid code doesn't work at all. The mainthread object in MTinterface
is not properly initialized, the cancel_event is NULL and the win32_obj_id
is NULL because myself->hProcess is NULL when MTinterface is initialized
(and i don't think that a process handle can be used as thread handle).
Even if the handles would be valid the pthread_join call would try to
delete a thread object that is created static which would result in a
corrupted heap.
Concept test Contributed by Thomas Pfaff <tpfaff@gmx.net>
Scriptable test by Robert Collins <rbtcollins@hotmail.com>
*/