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bug#18162: 24.3.92; segfault on null face pointer in face_for_char


From: Ken Raeburn
Subject: bug#18162: 24.3.92; segfault on null face pointer in face_for_char
Date: Fri, 1 Aug 2014 21:52:44 -0400

On Fri, Aug 1, 2014 at 1:57 AM, Eli Zaretskii <address@hidden> wrote:
Sounds like some code called clear_face_cache, for some reason.  Is f
at all the same frame where you were typing?  If not, the crash could
have nothing to do with what you typed, but with some background
activity on another frame.

I just ran Emacs a while under gdb, and it called clear_face_cache while I wasn't doing anything interesting, just typing into a buffer. It happened from in redisplay_internal when clear_face_cache_count reached 501. Its documentation says it's used to "clear the face cache every once in a while".

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