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Date: Sat, 25 Jun 2005 15:28:00 -0000
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From: Mark Kettenis <mark.kettenis@xs4all.nl>
To: gdb@sources.redhat.com
CC: gdb@sources.redhat.com
In-reply-to: <20050624151129.GH66895@keyslapper.net> (message from Louis
	LeBlanc on Fri, 24 Jun 2005 11:11:29 -0400)
Subject: Re: aborted thread backtrace stops at sighandler call
References:  <20050624151129.GH66895@keyslapper.net>
X-SW-Source: 2005-06/txt/msg00249.txt.bz2

   Date: Fri, 24 Jun 2005 11:11:29 -0400
   From: Louis LeBlanc <dev@keyslapper.net>

Looked a bit closer into this.

   This is the backtrace for the aborted thread:
   (gdb) bt
   #0  0xfea1f82c in __tbl_2_huge_digits () from /usr/lib/libc.so.1
   #1  0xfe9d0a24 in sysconf () from /usr/lib/libc.so.1
   #2  0xfe9b6ce0 in ascftime () from /usr/lib/libc.so.1
   #3  0x0003c72c in XPCSigCheck (Sig=11, Info=0xfe776ad0, Context=0xfe776818) at xpcsig.c:347
   #4  0xff365b14 in ?? ()
   #5  0xff365b18 in ?? ()
   Previous frame identical to this frame (corrupt stack?)

This backtrace is weird.  __tbl_2_huge_digits isn't a function but
some sort of data structure.  No surprise that gdb's unwinder gets
confused!  For some reason gdb's symbol reader made a mistake when
reading in the symbols for /usr/lib/libc.so.1.

Mark