to call, only iff THREAD_CREATE_NEEDS_STACK.
p4raw-id: //depot/perl@10651
err = pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK);
if (err)
croak("panic: pthread_attr_setstacksize failed");
-#else
- croak("panic: can't pthread_attr_setstacksize");
# endif
# ifdef PTHREAD_ATTR_SETDETACHSTATE
if (err == 0)