pthread_cancel / sleep change in behaviour

[Erich Dollansky]

Hi,

On Thu, 3 Sep 2015 13:43:51 +0300
Konstantin Belousov <kostikbel at gmail.com> wrote:
> On Thu, Sep 03, 2015 at 06:33:53PM +0800, Erich Dollansky wrote:
> > On Thu, 3 Sep 2015 11:19:47 +0300
> > Konstantin Belousov <kostikbel at gmail.com> wrote:
> > > On Thu, Sep 03, 2015 at 08:00:47AM +0800, Erich Dollansky wrote:
> > > > Is this change of behaviour a feature or a bug?
> > > Provide a minimal example demonstrating the issue.
> > while preparing the example I found the source of the problem. We
> > have to block all signals for some reason. The handling for
> > 
> > signal (SIGTHR, SIG_IGN);
> > 
> > seems to have changed. The moment I remove above's line from the
> > code, the program works. There is no difference when the programs
> > runs on machines prior mid November 2014.
> > 
> Err, this is a bug, probably both in your program (user code must not
> twiddle with SIGCANCEL) and in libc. The later, I believe, was fixed

I just ran the same binary on:

FreeBSD B85M-HD3-0.alogt.com 11.0-CURRENT FreeBSD 11.0-CURRENT #5
r287425: Thu Sep  3 21:44:16 WITA 2015
erich at B85M-HD3-0.alogt.com:/usr/obj/usr/src/sys/B85M-HD3  amd64

and it works there.

So, it is just a matter of time until the fix finds its way back to 10?

Of course, I do not ignore the signal now in the application anymore.
The application then works as expected on 10.2 STABLE.

Thanks for your work and also thanks for your help.

Erich