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More trap-handling crashes
- X-seq: zsh-workers 11854
- From: "Bart Schaefer" <schaefer@xxxxxxxxxxxxxxxxxxxxxxx>
- To: zsh-workers@xxxxxxxxxxxxxx
- Subject: More trap-handling crashes
- Date: Sat, 10 Jun 2000 18:22:54 +0000
- Mailing-list: contact zsh-workers-help@xxxxxxxxxxxxxx; run by ezmlm
The quickest way to see it is as follows:
zagzig[81] Src/zsh -f
zagzig% autoload -U promptinit
zagzig% promptinit
zagzig% prompt bart
zagzig [prompt bart] /usr/src/local/zsh/zsh-3.1.9-build 00-06-10 10:49AM
zagzig% prompt bart off
(zsh consumes all available memory, then crashes)
The problem is that here:
#0 dosavetrap (sig=28, level=3) at ../../zsh-3.1.6/Src/signals.c:675
#1 0x809312f in removetrap (sig=28) at ../../zsh-3.1.6/Src/signals.c:756
#2 0x8093080 in unsettrap (sig=28) at ../../zsh-3.1.6/Src/signals.c:733
#3 0x8092fb1 in settrap (sig=28, l=0x8124c10)
at ../../zsh-3.1.6/Src/signals.c:700
#4 0x80a613f in setfunction (name=0x400e23d8 "TRAPWINCH", val=0x8124bc8 "",
dis=0) at ../../../zsh-3.1.6/Src/Modules/parameter.c:357
(More stack frames follow...)
sigfuncs[sig] points to a completely garbaged eprog with a huge `len' field,
so zsh tried to allocate roughly a gigabyte of memory.
localtraps is not set, and there's no exit trap involved. I suspect this
is related to the (root cause of the) TRAPEXIT crash that Clint patched
recently.
--
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
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