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glibc/debug/catchsegv.sh
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#!/bin/sh | |
# Copyright (C) 1998-2016 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 Lesser General Public | |
# License as published by the Free Software Foundation; either | |
# version 2.1 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 | |
# Lesser General Public License for more details. | |
# You should have received a copy of the GNU Lesser General Public | |
# License along with the GNU C Library; if not, see | |
# <http://www.gnu.org/licenses/>. | |
if test $# -eq 0; then | |
echo "$0: missing program name" >&2 | |
echo "Try \`$0 --help' for more information." >&2 | |
exit 1 | |
fi | |
prog="$1" | |
shift | |
if test $# -eq 0; then | |
case "$prog" 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 'For bug reporting instructions, please see:' | |
cat <<\EOF | |
@REPORT_BUGS_TO@. | |
EOF | |
exit 0 | |
;; | |
--v | --ve | --ver | --vers | --versi | --versio | --version) | |
echo 'catchsegv @PKGVERSION@@VERSION@' | |
echo 'Copyright (C) 2016 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 | |
segv_output=`mktemp ${TMPDIR:-/tmp}/segv_output.XXXXXX` || exit | |
# Redirect stderr to avoid termination message from shell. | |
(exec 3>&2 2>/dev/null | |
LD_PRELOAD=${LD_PRELOAD:+${LD_PRELOAD}:}@SLIB@/libSegFault.so \ | |
SEGFAULT_USE_ALTSTACK=1 \ | |
SEGFAULT_OUTPUT_NAME=$segv_output \ | |
"$prog" ${1+"$@"} 2>&3 3>&-) | |
exval=$? | |
# Check for output. Even if the program terminated correctly it might | |
# be that a minor process (clone) failed. Therefore we do not check the | |
# exit code. | |
if test -s "$segv_output"; then | |
# The program caught a signal. 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. | |
case $prog in | |
*/*) ;; | |
*) | |
old_IFS=$IFS | |
IFS=: | |
for p in $PATH; do | |
test -n "$p" || p=. | |
if test -f "$p/$prog"; then | |
prog=$p/$prog | |
break | |
fi | |
done | |
IFS=$old_IFS | |
;; | |
esac | |
sed '/Backtrace/q' "$segv_output" | |
sed '1,/Backtrace/d' "$segv_output" | | |
(while read line; do | |
line=`echo $line | sed "s@^$prog\\(\\[.*\\)@\1@"` | |
case "$line" in | |
\[*) addr=`echo "$line" | sed 's/^\[\(.*\)\]$/\1/'` | |
complete=`addr2line -f -e "$prog" $addr 2>/dev/null` | |
if test $? -eq 0; then | |
echo "`echo "$complete"|sed 'N;s/\(.*\)\n\(.*\)/\2(\1)/;'`$line" | |
else | |
echo "$line" | |
fi | |
;; | |
*) echo "$line" | |
;; | |
esac | |
done) | |
fi | |
rm -f "$segv_output" | |
exit $exval |