zsh-workers
 help / color / mirror / code / Atom feed
From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: zsh-workers@sunsite.auc.dk
Subject: More trap-handling crashes
Date: Sat, 10 Jun 2000 18:22:54 +0000	[thread overview]
Message-ID: <1000610182255.ZM28376@candle.brasslantern.com> (raw)

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   


             reply	other threads:[~2000-06-10 18:23 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-06-10 18:22 Bart Schaefer [this message]
2000-06-10 18:56 ` Bart Schaefer
2000-06-10 19:28   ` Bart Schaefer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1000610182255.ZM28376@candle.brasslantern.com \
    --to=schaefer@candle.brasslantern.com \
    --cc=zsh-workers@sunsite.auc.dk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://git.vuxu.org/mirror/zsh/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).