GNU bug report logs - #79131
31.0.50; igc: nested signal, SIGSEGV

Previous Next

Full log

Message #11 received at 79131 <at> debbugs.gnu.org (full text, mbox):

From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: Óscar Fuentes <oscarfv <at> eclipso.eu>
Cc: 79131 <at> debbugs.gnu.org, Pip Cet <pipcet <at> protonmail.com>
Subject: Re: bug#79131: 31.0.50; igc: nested signal, SIGSEGV
Date: Thu, 31 Jul 2025 07:42:11 +0200

Óscar Fuentes <oscarfv <at> eclipso.eu> writes:

> #12 add_text_properties_1 (start=<optimized out>, start <at> entry=0x1f06a, end=<optimized out>, 
>     end <at> entry=0x1f07a, properties=0x7f4fe3c2acc3, object=0x7f4fe645cfbd, 
>     object <at> entry=0x0, set_type=set_type <at> entry=TEXT_PROPERTY_REPLACE, destructive=destructive <at> entry=true)
> --Type <RET> for more, q to quit, c to continue without paging--c
>     at ../../emacs/src/textprop.c:1252
>         i = 0x0
>         unchanged = <optimized out>
>         s = 31770
>         len = 3
>         modified = <optimized out>
>         first_time = <optimized out>

That would be around here

textprop.c:
 1251   /* We are at the beginning of interval I, with LEN chars to scan.  */
 1252   for (;;)
 1253     {
 1254       eassert (i != 0);
 1255 
 1256       if (LENGTH (i) >= len)
 1257         {

and that probably means i is NULL, which is a pointer to an interval. It
is accessed in LENGTH. Which in would mean that the interval tree is
kaput. Can you reproduce that?

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.