svn commit: r302194 - head/lib/libthr/thread

[Konstantin Belousov]

On Sun, Jun 26, 2016 at 12:33:38AM +0200, Jilles Tjoelker wrote:
> To be bug-compatible with glibc, you'd need to return the wrong
> [EDEADLK] error for robust errorcheck mutexes only. Robust
> non-errorcheck and non-robust errorcheck mutexes return the correct
> [EBUSY]. I have not checked PI and PP mutexes which probably use a
> different code path.
Yes, you are right, I read the glibc code wrong way.

> I'm not sure whether we should copy glibc's bug, but if we do it must be
> documented in the man page. I'm not happy with it because the bug may
> break applications written to the standard; at least, Samba developers
> should be contacted first.

I tried to send the mail to samba tech list yesterday, but it did not pass.
Seems that today I managed it.

Still, it is pity that the only real-world consumer of the robust
interface cannot exercise our implementation due to this minor issue.