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[glibc/history.git] / debug / catchsegv.sh
blob5a91d21137d124d4b13ab1ab939353685502e229
1 #! /bin/sh
2 # Copyright (C) 1998,1999,2001,2003,2004,2006,2007,2008,2009
3 # Free Software Foundation, Inc.
4 # This file is part of the GNU C Library.
5 # Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
7 # The GNU C Library is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU Lesser General Public
9 # License as published by the Free Software Foundation; either
10 # version 2.1 of the License, or (at your option) any later version.
12 # The GNU C Library is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 # Lesser General Public License for more details.
17 # You should have received a copy of the GNU Lesser General Public
18 # License along with the GNU C Library; if not, write to the Free
19 # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # 02111-1307 USA.
22 if test $# -eq 0; then
23 echo "$0: missing program name" >&2
24 echo "Try \`$0 --help' for more information." >&2
25 exit 1
28 prog="$1"
29 shift
31 if test $# -eq 0; then
32 case "$prog" in
33 --h | --he | --hel | --help)
34 echo 'Usage: catchsegv PROGRAM ARGS...'
35 echo ' --help print this help, then exit'
36 echo ' --version print version number, then exit'
37 echo "For bug reporting instructions, please see:"
38 echo "<http://www.gnu.org/software/libc/bugs.html>."
39 exit 0
41 --v | --ve | --ver | --vers | --versi | --versio | --version)
42 echo 'catchsegv (GNU libc) @VERSION@'
43 echo 'Copyright (C) 2009 Free Software Foundation, Inc.
44 This is free software; see the source for copying conditions. There is NO
45 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
46 Written by Ulrich Drepper.'
47 exit 0
51 esac
54 segv_output=`mktemp ${TMPDIR:-/tmp}/segv_output.XXXXXX` || exit
56 # Redirect stderr to avoid termination message from shell.
57 (exec 3>&2 2>/dev/null
58 LD_PRELOAD=${LD_PRELOAD:+${LD_PRELOAD}:}@SLIB@/libSegFault.so \
59 SEGFAULT_USE_ALTSTACK=1 \
60 SEGFAULT_OUTPUT_NAME=$segv_output \
61 "$prog" ${1+"$@"} 2>&3 3>&-)
62 exval=$?
64 # Check for output. Even if the program terminated correctly it might
65 # be that a minor process (clone) failed. Therefore we do not check the
66 # exit code.
67 if test -s "$segv_output"; then
68 # The program caught a signal. The output is in the file with the
69 # name we have in SEGFAULT_OUTPUT_NAME. In the output the names of
70 # functions in shared objects are available, but names in the static
71 # part of the program are not. We use addr2line to get this information.
72 case $prog in
73 */*) ;;
75 old_IFS=$IFS
76 IFS=:
77 for p in $PATH; do
78 test -n "$p" || p=.
79 if test -f "$p/$prog"; then
80 prog=$p/$prog
81 break
83 done
84 IFS=$old_IFS
86 esac
87 sed '/Backtrace/q' "$segv_output"
88 sed '1,/Backtrace/d' "$segv_output" |
89 (while read line; do
90 line=`echo $line | sed "s@^$prog\\(\\[.*\\)@\1@"`
91 case "$line" in
92 \[*) addr=`echo "$line" | sed 's/^\[\(.*\)\]$/\1/'`
93 complete=`addr2line -f -e "$prog" $addr 2>/dev/null`
94 if test $? -eq 0; then
95 echo "`echo "$complete"|sed 'N;s/\(.*\)\n\(.*\)/\2(\1)/;'`$line"
96 else
97 echo "$line"
100 *) echo "$line"
102 esac
103 done)
105 rm -f "$segv_output"
107 exit $exval