bash coredumps in XEmacs M-x shell under OpenBSD with set -o emacs

[olof]

Configuration Information [Automatically generated, do not change]:
Machine: i386
OS: openbsd2.8
Compiler: cc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='openbsd2.8' -DCONF_MACHTYPE='i386-pc-openbsd2.8' 
-DCONF_VENDOR='pc' -DSHELL  -DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib 
-I/usr/local/include -O2
uname output: OpenBSD boulard 2.8 BOULARD#2 i386
Machine Type: i386-pc-openbsd2.8

Bash Version: 2.04
Patch Level: 0
Release Status: release

Description:
        Bash dumps core right after printing the first prompt after
        setting "set -o emacs" in the buffer (M-x shell).

Repeat-By:
        move away any .bashrc/.bash_profile/.profile files
        Run: xemacs -vanilla
        Type: M-x shell
        Type: echo apa; set -o emacs; echo bepa

        The shell will print:
        "apa
        bepa
        "
        Then, bash will dump core.

        I've only tested this on OpenBSD.  I can test it on SunOS 5.8
        too, if wanted.

Fix:
        Remove "set -o emacs" from my .bashrc