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bug#5973: Crash in get_next_display_element
From: |
Eli Zaretskii |
Subject: |
bug#5973: Crash in get_next_display_element |
Date: |
Mon, 19 Apr 2010 21:26:55 +0300 |
> From: David Reitter <david.reitter@gmail.com>
> Date: Mon, 19 Apr 2010 13:40:18 -0400
> Cc: 5973@debbugs.gnu.org
>
> On Apr 19, 2010, at 1:23 PM, Eli Zaretskii wrote:
> >
> > Let's start by finding the immediate reason for the crash. Please
> > show the contents of `face', the last argument to FACE_FOR_CHAR in the
> > line that crashed.
>
> How do I do that?
> It didn't run in gdb, and I don't know how to reproduce the crash.
Do you have a core file? If so, then you can run GDB on it.
If not, then I'm afraid we will need to wait for another instance of
this crash.
> > Also, what kind of signal was it that crashed the program? (The
> > backtrace is in some form that I'm not familiar with, so maybe the
> > information is already present there.)
>
> Yes:
>
> Exception Type: EXC_BAD_ACCESS (SIGABRT)
> Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000110
This sounds like SIGSEGV, so I wonder why it says SIGABRT.
> > Thanks, but I don't think we should fix problems until we understand
> > them. In general, it->face_id should index a face that is already
> > realized at this point.
>
> Is it possible that this code runs, somehow, after a face got deleted? That,
> per se, might be the real cause of the bug - but I can only speculate.
I don't know. But this code exists there since Emacs 21.x, with only
minor changes.
- bug#5973: Crash in get_next_display_element, David Reitter, 2010/04/19
- bug#5973: Crash in get_next_display_element, Eli Zaretskii, 2010/04/19
- bug#5973: Crash in get_next_display_element, David Reitter, 2010/04/19
- bug#5973: Crash in get_next_display_element, Juanma Barranquero, 2010/04/19
- bug#5973: Crash in get_next_display_element, Eli Zaretskii, 2010/04/20
- bug#5973: Crash in get_next_display_element, Juanma Barranquero, 2010/04/20
- bug#5973: Crash in get_next_display_element, Eli Zaretskii, 2010/04/20
- bug#5973: Crash in get_next_display_element, Juanma Barranquero, 2010/04/20
- bug#5973: Crash in get_next_display_element, Eli Zaretskii, 2010/04/20
- bug#5973: Crash in get_next_display_element, Juanma Barranquero, 2010/04/20
- bug#5973: Crash in get_next_display_element, Juanma Barranquero, 2010/04/20