bug#21200: 25.0.50; xdisp.c: infinite loop when using invisibility specs

[Eli Zaretskii]

> Date: Thu, 6 Aug 2015 21:16:26 +0000
> From: Pip Cet <pipcet@gmail.com>
> Cc: 21200@debbugs.gnu.org
> 
> thank you for responding. I've attached the output of M-x
> report-emacs-bug, including the gdb backtrace and a test script that
> triggers the problem. If you need me to run further tests, please let
> me know.

Thanks.  Your analysis was correct, of course.  I fixed the bug with a
slightly different change (see commit 701484d on master), and also
added to the display engine's test suite a test case like the one you
presented.

> My apologies for sending an incomplete report at first.

No need to apologize.