bug#22789: 25.1.50; In last master build https connections stop working

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: a.s@realize.ch,  j_l_domenech@yahoo.com,  22789@debbugs.gnu.org
> Date: Fri, 04 Mar 2016 11:33:58 +0000
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Interestingly, if I run the same under GDB, the images load with about
> > 50% reliability.  So I guess there are still some subtle timing issues
> > somewhere.  Can you try this under GDB and see if there's some
> > difference?
> 
> It this with just running under gdb?

Yes.

> No special breakpoints or anything that would pause Emacs for a long
> time?

Not user breakpoints, no.  But GDB always inserts various hooks into
the program it runs, and in Emacs (if you run GDB from the src
directory), it also sets breakpoints in a few strategic places.  It
also announces new threads birth and demise etc.  All that evidently
does have some effect.