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emacs-22.1 coredumps on HPUX 11i

From: Dimitry Kloper
Subject: emacs-22.1 coredumps on HPUX 11i
Date: Wed, 15 Aug 2007 17:51:49 +0200


I apologise in case this bug was already reported.

HPUX 11i
gcc 3.3.3
Source snapshot from http://ftp.gnu.org/gnu/emacs/emacs-22.1.tar.gz
./configure --prefix=/usr/local/emacs-22.1 --with-x-toolkit=lucid

[src]$ ./emacs -nw
Segmentation fault (core dumped)
[src]$ rm core
[src]$ gdb emacs
GNU gdb 5.3
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "hppa2.0n-hp-hpux11.00"...
TERM = vt100
Breakpoint 1 at 0x17ebd8
(gdb) r -nw
Starting program: /usr/local/devel/dimka/emacs/emacs-22.1/src/emacs -nw

Program received signal SIGSEGV, Segmentation fault.
0x002a92a4 in _free_internal ()
(gdb) where
#0  0x002a92a4 in _free_internal ()
#1  0x002aa274 in free ()
#2  0x001ed49c in emacs_blocked_free ()
#3  0x002aa264 in free ()
#4  0x001eca98 in xfree ()
#5  0x000ee6b0 in tty_default_color_capabilities ()
#6  0x000ef650 in term_init ()
#7  0x0003e680 in init_display ()
#8  0x00150f24 in main ()
#9  0x77ee3460 in _start () from /usr/lib/libc.2
(gdb) k
Kill the program being debugged? (y or n) y

The problem appears to be in the uninitialized static pointers
default_orig_pair, default_set_foreground, default_set_background at the very
beginning of function  tty_default_color_capabilities() in term.c.

Indeed, simply initializing those to NULL values solves the core dump.
Here is the beginning of the fixed function:

static void
tty_default_color_capabilities (save)
     int save;
  static char
    *default_orig_pair = NULL,
    *default_set_foreground = NULL,
    *default_set_background = NULL;

Hope that helps

Dimitry Kloper
dimitry point kloper at gmail point com

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