glibc/debug/catchsegv.sh

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#! /bin/sh
# Copyright (C) 1998 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
# The GNU C Library 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
# Library General Public License for more details.
# You should have received a copy of the GNU Library General Public
# License along with the GNU C Library; see the file COPYING.LIB. If not,
# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
prog="$1"
shift
args="$*"
if test $# -eq 0; then
case "$args" in
--h | --he | --hel | --help)
echo 'Usage: catchsegv PROGRAM ARGS...'
echo ' --help print this help, then exit'
echo ' --version print version number, then exit'
echo "Report bugs using the \`glibcbug' script to <bugs@gnu.org>."
exit 0
;;
--v | --ve | --ver | --vers | --versi | --versio | --version)
echo 'catchsegv (GNU libc) @VERSION@'
echo 'Copyright (C) 1998 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Ulrich Drepper.'
exit 0
;;
*)
;;
esac
fi
LD_PRELOAD="${LD_PRELOAD:+${LD_PRELOAD}:}@SLIB@/libSegFault.so"
export LD_PRELOAD
SEGFAULT_USE_ALTSTACK=1
export SEGFAULT_USE_ALTSTACK
SEGFAULT_OUTPUT_NAME="$prog.segv.$$"
export SEGFAULT_OUTPUT_NAME
$prog $args
exval=$?
unset LD_PRELOAD
# Check for an segmentation fault.
if test $exval -eq 139; then
# We caught a segmentation error. The output is in the file with the
# name we have in SEGFAULT_OUTPUT_NAME. In the output the names of
# functions in shared objects are available, but names in the static
# part of the program are not. We use addr2line to get this information.
(read line; echo "$line"
read line; echo "$line"
while read line; do
case "$line" in
[*) addr="`echo $line | sed 's/^[\(.*\)]$/\1/'`"
complete="`addr2line -f -e $prog $addr 2>/dev/null|`"
if $? -eq 0; then
echo "`echo $complete|sed 'N;s/\(.*\)\n\(.*\)/\2(\1)/;'`$line"
else
echo "$line"
fi
;;
*) echo "$line"
;;
esac
done) < $SEGFAULT_OUTPUT_NAME
rm $SEGFAULT_OUTPUT_NAME
fi
exit $exval