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bug#21394: 25.0.50; Segfault when displaying unprintable character in ec
From: |
Eli Zaretskii |
Subject: |
bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created |
Date: |
Tue, 01 Sep 2015 22:37:16 +0300 |
> Date: Tue, 1 Sep 2015 18:52:44 +0000
> From: Pip Cet <pipcet@gmail.com>
> Cc: 21394@debbugs.gnu.org
>
> I see the problematic face always has face ID of 18, and the 'used'
> field is always 15 when the segfault strikes. So I guess the next
> step is to make the breakpoint in cache_face conditional on i being
> 18,
>
> i is used in two different ways in that function, as a face hash and as an
> index into faces_by_id. I assume you mean the latter?
Yes.
> and then see whether c->used is set to 19 during that call to
> cache_face. If it does, then a watchpoint (by location) on c->used
> should show which code makes the value smaller.
>
> So I wrote a perl script to set a watchpoint on c->used whenever we allocate a
> new face cache c in make_face_cache, and clear the watchpoint when we hit
> free_face_cache. Output attached, but do let me know what else you would like
> watched. I think that has all the information your approach would have given
> us.
Sounds like the face ID of 18 is "remembered" somewhere, and not
"forgotten" when the face cache is free'd?
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Pip Cet, 2015/09/01
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Eli Zaretskii, 2015/09/01
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Pip Cet, 2015/09/01
- Message not available
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Eli Zaretskii, 2015/09/01
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Pip Cet, 2015/09/01
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created,
Eli Zaretskii <=
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Pip Cet, 2015/09/01
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Eli Zaretskii, 2015/09/02
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Pip Cet, 2015/09/02
- bug#21394: 25.0.50; Segfault when displaying unprintable character in echo area while frames are being created, Eli Zaretskii, 2015/09/05