Re: Autotools macro to test for pthreads fails with "Resource lost" on hurd

Hello!

On Tue, Aug 18, 2009 at 01:28:13PM -0700, Roland McGrath wrote:
> > do we need to add this check?  Or is the glibc code already supposed to
> > handle that correctly?  Roland?
> 
> pthread_kill should short-circuit for signal 0 after it's validated the thread.
> That usage mode is not actually kosher any more as a thread-validity check
> like using kill that way has always been a kosher PID-liveness and
> permission-to-signal check, since pthread_kill is not required to
> gracefully diagnose a bogus pthread_t.  But the degenerate use on
> pthread_self () is always going to work, so I guess that configure check is OK.

Understood.

Samuel now pushed the same short-circuiting code snippet that I had in my
tree (and forgot :-( to push at that time...).  I also enhanced
libpthread's test-16.c with respect to that -- does that look alright?
<http://git.savannah.gnu.org/cgit/hurd/libpthread.git/log/?h=master-test>


Regards,
 Thomas

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