glibc/debug/catchsegv.sh
Paul Eggert 9fcdec7386 Update copyright dates not handled by scripts/update-copyrights.
I've updated copyright dates in glibc for 2021.  This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.  As well as the usual annual
updates, mainly dates in --version output (minus csu/version.c which
previously had to be handled manually but is now successfully updated
by update-copyrights), there is a small change to the copyright notice
in NEWS which should let NEWS get updated automatically next year.

Please remember to include 2021 in the dates for any new files added
in future (which means updating any existing uncommitted patches you
have that add new files to use the new copyright dates in them).
2021-01-02 12:17:34 -08:00

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#!/bin/sh
# Copyright (C) 1998-2021 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
# <https://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) 2021 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