Bug 33952

This test case makes the pthreads code print a bogus error message:

Fatal error 'Thread 0x804c400 has called pthread_exit() from a destructor. POSIX 1003.1 1996 s16.2.5.2 does not allow this!' at line ? in file /usr/src/lib/libc_r/uthread/uthread_exit.c (errno = ?)

Fix: 

None.  We have to tell our customer to run the program on any Unix
system except FreeBSD until this (and the other pthreads bug we've
also reported) are fixed.
How-To-Repeat: Compile and run the program below.

#include <pthread.h>
#include <unistd.h>

int stop_flag = 0;

void *
crunch(void *ignored)
{
  pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, 0);
  pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, 0);

  while (!stop_flag)
    ;
  pthread_exit (0);
}

int
main()
{
  pthread_t thread;

  pthread_create(&thread, NULL, crunch, 0);
  sleep(1);
  pthread_cancel(thread);
  stop_flag = 1;
  sleep(1);
  return 0;
}