From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4742 invoked from network); 20 Jun 2001 04:05:14 -0000 Received: from sunsite.dk (130.225.51.30) by ns1.primenet.com.au with SMTP; 20 Jun 2001 04:05:14 -0000 Received: (qmail 8401 invoked by alias); 20 Jun 2001 04:04:38 -0000 Mailing-List: contact zsh-workers-help@sunsite.dk; run by ezmlm Precedence: bulk X-No-Archive: yes X-Seq: 14983 Received: (qmail 8378 invoked from network); 20 Jun 2001 04:04:38 -0000 From: "Bart Schaefer" Message-Id: <1010620040105.ZM1105@candle.brasslantern.com> Date: Wed, 20 Jun 2001 04:01:05 +0000 In-Reply-To: <20010619183324.A17427@dman.com> Comments: In reply to Clint Adams "Re: Bug#101523: zsh segmentation fault" (Jun 19, 6:33pm) References: <20010619225633.A7077@Amber.lab.icm.edu.pl> <20010619183324.A17427@dman.com> X-Mailer: Z-Mail (5.0.0 30July97) To: Clint Adams , zsh-workers@sunsite.dk Subject: Re: Bug#101523: zsh segmentation fault Cc: Michal Politowski , 101523-forwarded@bugs.debian.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii On Jun 19, 6:33pm, Clint Adams wrote: } } I can reproduce this with zsh --no-equals -fx shoop.sh It's happening when the `=' parameter is (not) restored upon exit from the function. I'm not sure that's really the root cause, though. Trace below. I will point out that there's a rather nasty bug in shoop.sh on line 61: local orgargs="$@" This will almost certainly not do what is wanted; it'll set orgargs to be $1 and will make local variables whose names are the rest of the arguments. Then later, set -- $orgargs will also not produce the desired effect. ------------ BUG: in restoring special parameters zsh: segmentation fault (core dumped) zagzig<11> gdb Src/zsh core GNU gdb 4.17.0.4 with Linux/x86 hardware watchpoint and FPU support Copyright 1998 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 "i386-redhat-linux"... Core was generated by `Src/zsh -o noequals -fx /home/schaefer/Mail/detach.dir/shoop.sh'. Program terminated with signal 11, Segmentation fault. Reading symbols from /lib/libnsl.so.1...done. Reading symbols from /usr/lib/libncurses.so.4...done. Reading symbols from /lib/libm.so.6...done. Reading symbols from /lib/libc.so.6...done. Reading symbols from /lib/ld-linux.so.2...done. Reading symbols from /lib/libnss_files.so.1...done. #0 0x805f3c2 in restore_params (restorelist=0x40112580, removelist=0x40112588) at ../../zsh-4.0/Src/exec.c:2439 2439 tpm->flags = pm->flags; (gdb) where #0 0x805f3c2 in restore_params (restorelist=0x40112580, removelist=0x40112588) at ../../zsh-4.0/Src/exec.c:2439 #1 0x805eecc in execcmd (state=0xbffffaa8, input=0, output=0, how=18, last1=2) at ../../zsh-4.0/Src/exec.c:2315 #2 0x805bacb in execpline2 (state=0xbffffaa8, pcode=5699, how=18, input=0, output=0, last1=0) at ../../zsh-4.0/Src/exec.c:1192 #3 0x805b043 in execpline (state=0xbffffaa8, slcode=11266, how=18, last1=0) at ../../zsh-4.0/Src/exec.c:982 #4 0x805a9dd in execlist (state=0xbffffaa8, dont_change_job=0, exiting=0) at ../../zsh-4.0/Src/exec.c:826 #5 0x805a6f7 in execode (p=0x401122c8, dont_change_job=0, exiting=0) at ../../zsh-4.0/Src/exec.c:729 #6 0x806fcd5 in loop (toplevel=1, justonce=0) at ../../zsh-4.0/Src/init.c:160 #7 0x80724b4 in zsh_main (argc=5, argv=0xbffffb38) at ../../zsh-4.0/Src/init.c:1209 #8 0x804a8b4 in main (argc=5, argv=0xbffffb38) at ../../zsh-4.0/Src/main.c:37 (gdb) p pm $1 = (struct param *) 0x40112590 (gdb) p *pm $2 = {next = 0x40112568, nam = 0x8124bbc "=", flags = 786432, u = { data = 0x8137640, arr = 0x8137640, str = 0x8137640 " ", val = 7309465757271946816, dval = 4.2633628668410461e+180, hash = 0x8137640}, sets = {cfn = 0x998b646e, ifn = 0x998b646e, ffn = 0x998b646e, afn = 0x998b646e, hfn = 0x998b646e}, gets = {cfn = 0x99, ifn = 0x99, ffn = 0x99, afn = 0x99, hfn = 0x99}, unsetfn = 0, ct = 0, env = 0x0, ename = 0x0, old = 0x0, level = 1074866392} (gdb) p tpm $3 = (struct param *) 0x0 (gdb) l 2434 Param tpm = (Param) paramtab->getnode(paramtab, pm->nam); 2435 2436 DPUTS(!tpm || PM_TYPE(pm->flags) != PM_TYPE(tpm->flags) || 2437 !(pm->flags & PM_SPECIAL), 2438 "BUG: in restoring special parameters"); 2439 tpm->flags = pm->flags; 2440 switch (PM_TYPE(pm->flags)) { 2441 case PM_SCALAR: 2442 tpm->sets.cfn(tpm, pm->u.str); 2443 break; (gdb) p pm->nam $4 = 0x8124bbc "=" -- Bart Schaefer Brass Lantern Enterprises http://www.well.com/user/barts http://www.brasslantern.com Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net