Re: 3.0.6-pre-5 problem

[Jos Backus <Jos.Backus@nl.origin-it.com>]

More info: I just rebuilt zsh with --enable-zsh-debug. Now, when I start an
xterm, start mutt (using the function) and press ^Z, both mutt and the xterm
disappear, leaving a zsh.core file behind. See stacktrace.

Interestingly, this backtrace looks quite different from the first one.

hal:~% gdb /bin/zsh zsh.core
GNU gdb 4.18
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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 "i386-unknown-freebsd"...
Core was generated by `zsh'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libtermcap.so.2...done.
Reading symbols from /usr/lib/libc.so.3...done.
Reading symbols from /usr/libexec/ld-elf.so.1...done.
#0  0x805a2ed in execpline (l=0x80c57d8, how=2, last1=0) at exec.c:774
774                         for (pn = jobtab[jn->other].procs; pn; pn = pn->next)
(gdb) where
#0  0x805a2ed in execpline (l=0x80c57d8, how=2, last1=0) at exec.c:774
#1  0x8059db7 in execlist (list=0x80c5850, dont_change_job=0, exiting=0)
    at exec.c:612
#2  0x806b6ec in loop (toplevel=1, justonce=0) at init.c:143
#3  0x806b47d in main (argc=1, argv=0xbfbfd628) at init.c:75
(gdb) list
769
770                         curjob = newjob;
771                         DPUTS(!list_pipe_pid, "invalid list_pipe_pid");
772                         addproc(list_pipe_pid, list_pipe_text);
773
774                         for (pn = jobtab[jn->other].procs; pn; pn = pn->next)
775                             if (WIFSTOPPED(pn->status))
776                                 break;
777
778                         if (pn) {
(gdb) p pn
$3 = (struct process *) 0xbfbfd630
(gdb) p jobtab
$2 = {{gleader = 0, other = 0, stat = 0, pwd = 0x0, procs = 0x0,
    filelist = 0x0, stty_in_env = 0, ty = 0x0}, {gleader = 12603,
    other = 12650, stat = 499, pwd = 0x80e8460 "/home/jos", procs = 0x80c2b00,
    filelist = 0x0, stty_in_env = 0, ty = 0x80c8580}, {gleader = 0, other = 0,
    stat = 0, pwd = 0x0, procs = 0x0, filelist = 0x0, stty_in_env = 0,
    ty = 0x0} <repeats 48 times>}
(gdb) p jn
$7 = 0x80bb200
(gdb) p jn->other
$8 = 12650
(gdb) p jobtab[jn->other]
Cannot access memory at address 0x811df20.
(gdb) 

Anyone have suggestions regarding things I can try in order to track down this
problem?

-- 
Jos Backus                          _/ _/_/_/  "Reliability means never
                                   _/ _/   _/   having to say you're sorry."
                                  _/ _/_/_/             -- D. J. Bernstein
                             _/  _/ _/    _/
Jos.Backus@nl.origin-it.com  _/_/  _/_/_/      use Std::Disclaimer;