#!/bin/bash
#
# Copyright (C) 2002 by Ketil Froyn <address@hidden>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
#
#
# Demonstrate segfault in "rm -rf" when the stack runs full
#
ulimit -s 64

if [ -e aaa ]; then
  echo "There is a file or directory already called 'aaa' here. Remove it or";
  echo "run this script from somewhere else";
  exit
fi;

echo Creating directory structure
perl -e 'for ($i=0; $i < 200; $i++) { unless(mkdir("aaa",0777)) { die "Unable to create dirs: $!"; } chdir "aaa"; }'

echo -n "Counting directories created...: "
perl -e '$i=0; while (-e "aaa") { unless (chdir "aaa") { die "error: $!"; } $i++; } print "$i\n";'

echo "Hit enter to continue"
head -1 > /dev/null

echo Attempting to remove directory structure with rm \(should segfault\)
rm -rf aaa

echo "Hit enter to continue"
head -1 > /dev/null

echo Removing directories \(assuming nothing else has been put in there\)
perl -e '$i=0; while ( -e "aaa") { $i++; chdir "aaa"; if (-e "core") {unlink "core";} }; chdir ".."; while ($i--) { unless (rmdir "aaa") { die "Unable to rmdir aaa: $!"; } chdir ".."};'