bug#17281: 24.4.50; emacs hangs in next-line

[Stefan-W. Hahn]

Mail von Eli Zaretskii, Thu, 17 Apr 2014 at 11:00:05 +0300:
> > Date: Thu, 17 Apr 2014 09:25:23 +0200
> > From: "Stefan-W. Hahn" <stefan.hahn@s-hahn.de>
> > Cc: 17281@debbugs.gnu.org
> > 
> Then it's a different bug.  Are you sure it didn't happen before the
> above commit?  I seem to be able to reproduce it as far back as Mar 15
> (I have no easy way of trying older versions, due to changes in Lisp
> files involved in this recipe).

I tried it back till 17. Dec 2013, but not all versions are compileable.
All tried vesions have the same problem.

I even tried to debug it and I came to line-pixel-height (xdisp.c), which
calls start-display(). I made a debug output in line-pixel-height before the
call to start_display() and after. In the problematic case I never saw the
debug output after start_display().

With kind regards,
Stefan

-- 
Stefan-W. Hahn                          It is easy to make things.
                                        It is hard to make things simple.