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zsh-3.1.9-dev-6 crashes occassionally



Hi there,
I have the following problem with zsh-3.1.9-dev-6 on Debian GNU/Linux
for i386:
Sometimes, while trying to complete, zsh crashes and dumps core. In
fact, the problem has been there for quite a while now, perhaps it has
been there since the new completions system has been introduced - I
don't know. The problem is: I can't reproduce the bug. It just happens
to occur every once in a while.
Well, this is not the only problem: Sometimes, zsh forgets its
completion settings. I use this line in my .zshrc:
zstyle ':completion:*' completer _complete _ignored _match _correct _approximate _prefix
Now, sometimes, for some strange reason, zsh forgets to complete on tab
and starts to _correct things right away: For example, I had a directory
"abcdef" and a directory "abx" and typed "cd abc<TAB>" which resulted in
"cd abx".

Why do I report both things in one mail? Because I guess there might be
a problem in that "function calls function calls function"-way of doing
things: perhaps there's some functions that use a global variable by
accident instead of a local one, resulting in ill side-effects or such?

I use Debian's zsh-package (the one in woody aka unstable), but the
problem also occurs with self-compiled zsh (so it doesn't seem to be
specific to Debian's compiled version anyways).

Well... here's a gdb backtrace of a zsh core dump:

/scratch2/mp3> gdb =zsh core 
GNU gdb 5.0
Copyright 2000 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 "i686-pc-linux-gnu"...(no debugging symbols found)...
Core was generated by `zsh'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libnsl.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libncurses.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libncurses.so.5
Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_compat.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_compat.so.2
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/parameter.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/parameter.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/rlimits.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/rlimits.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/zutil.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/zutil.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/complist.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/complist.so
Reading symbols from /usr/lib/zsh/3.1.9-dev-6/zsh/computil.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/zsh/3.1.9-dev-6/zsh/computil.so
#0  0x401011cb in free () from /lib/libc.so.6
(gdb) bt
#0  0x401011cb in free () from /lib/libc.so.6
#1  0x40101053 in free () from /lib/libc.so.6
#2  0x807613e in zsfree ()
#3  0x80925e3 in freearray ()
#4  0x807cd66 in arrsetfn ()
#5  0x807cc82 in stdunsetfn ()
#6  0x807cb5a in unsetparam_pm ()
#7  0x807de6d in endparamscope ()
#8  0x8065a49 in scanhashtable ()
#9  0x807dd8f in endparamscope ()
#10 0x8060304 in runshfunc ()
#11 0x4021f682 in comp_setunset () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#12 0x80602aa in runshfunc ()
#13 0x806013c in doshfunc ()
#14 0x805fc67 in getproc ()
#15 0x805e16c in execsubst ()
#16 0x805bc15 in execlist ()
#17 0x805b3f3 in execlist ()
#18 0x805af9b in execlist ()
#19 0x8073768 in execif ()
#20 0x805dfef in execsubst ()
#21 0x805bc15 in execlist ()
#22 0x805b3f3 in execlist ()
#23 0x805af71 in execlist ()
#24 0x805ad46 in execode ()
#25 0x80602f0 in runshfunc ()
#26 0x4021f682 in comp_setunset () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#27 0x80602aa in runshfunc ()
#28 0x806013c in doshfunc ()
#29 0x805fc67 in getproc ()
#30 0x805e16c in execsubst ()
#31 0x805bc15 in execlist ()
#32 0x805b3f3 in execlist ()
#33 0x805af9b in execlist ()
#34 0x8073768 in execif ()
#35 0x805dfef in execsubst ()
#36 0x805bc15 in execlist ()
#37 0x805b3f3 in execlist ()
#38 0x805af71 in execlist ()
#39 0x805ad46 in execode ()
#40 0x80602f0 in runshfunc ()
#41 0x4021f682 in comp_setunset () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#42 0x80602aa in runshfunc ()
#43 0x806013c in doshfunc ()
#44 0x805fc67 in getproc ()
#45 0x805e16c in execsubst ()
#46 0x805bc15 in execlist ()
#47 0x805b3f3 in execlist ()
#48 0x805af71 in execlist ()
#49 0x80736b1 in execif ()
#50 0x805dfef in execsubst ()
#51 0x805bc15 in execlist ()
#52 0x805b3f3 in execlist ()
#53 0x805af71 in execlist ()
#54 0x8072bfe in execfor ()
#55 0x805dfef in execsubst ()
#56 0x805bc15 in execlist ()
#57 0x805b3f3 in execlist ()
#58 0x805af71 in execlist ()
#59 0x8072bfe in execfor ()
#60 0x805dfef in execsubst ()
#61 0x805bc15 in execlist ()
#62 0x805b3f3 in execlist ()
#63 0x805af71 in execlist ()
#64 0x805ad46 in execode ()
#65 0x80602f0 in runshfunc ()
#66 0x4021f682 in comp_setunset () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#67 0x80602aa in runshfunc ()
#68 0x806013c in doshfunc ()
#69 0x40221627 in after_complete () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#70 0x40221d61 in after_complete () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#71 0x402202b6 in do_completion () from /usr/lib/zsh/3.1.9-dev-6/zsh/complete.so
#72 0x80784a1 in runhookdef ()
#73 0x401deb4b in inststrlen () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#74 0x401dc55c in parambeg () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#75 0x401db64b in expandorcomplete () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#76 0x401db282 in completecall () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#77 0x401d34b8 in execzlefunc () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#78 0x401d30f1 in zleread () from /usr/lib/zsh/3.1.9-dev-6/zsh/zle.so
#79 0x806ca95 in ingetc ()
#80 0x806c9c6 in ingetc ()
#81 0x8066f00 in iaddtoline ()
#82 0x8070407 in gettok ()
#83 0x806fe45 in yylex ()
#84 0x807e6d1 in parse_event ()
#85 0x806a63d in loop ()
#86 0x806c744 in zsh_main ()
#87 0x80515d8 in main ()
#88 0x400adbcc in __libc_start_main () from /lib/libc.so.6
(gdb) 

CU,
Thomas

-- 
 Thomas Köhler Email:   jean-luc@xxxxxxxxxxxxxxxxx     | LCARS - Linux
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