https://github.com/root-project/root
Tip revision: a3ff83fa29df7fe851ba6cb0dde9db913b11ea05 authored by Axel Naumann on 07 November 2023, 14:35:55 UTC
[ci] Build the binaries for workflow dispatch!
[ci] Build the binaries for workflow dispatch!
Tip revision: a3ff83f
gdb-backtrace.sh
#!/bin/sh
# This script is almost identical to /usr/bin/gstack.
# It is used by TUnixSystem::StackTrace() on Linux and MacOS X.
tempname=`basename $0 .sh`
messfile=""
OUTFILE=`mktemp -q /tmp/${tempname}.XXXXXX`
if test $? -ne 0; then
OUTFILE=/dev/stdout
fi
if [ `uname -s` = "Darwin" ]; then
if test $# -lt 2; then
echo "Usage: ${tempname} <executable> <process-id> [gdb-mess-file]" 1>&2
exit 1
fi
if test $# -eq 3; then
messfile=$3
fi
if test ! -x $1; then
echo "${tempname}: process $1 not found." 1>&2
exit 1
fi
TMPFILE=`mktemp -q /tmp/${tempname}.XXXXXX`
if test $? -ne 0; then
echo "${tempname}: can't create temp file, exiting..." 1>&2
exit 1
fi
backtrace="thread apply all bt"
echo $backtrace > $TMPFILE
GDB=${GDB:-gdb}
# Run GDB, strip out unwanted noise.
$GDB -q -batch -n -x $TMPFILE $1 $2 2>&1 < /dev/null |
sed -n \
-e 's/^(gdb) //' \
-e '/^#/p' \
-e 's/\(^Thread.*\)/@\1/p' | tr "@" "\n" > $OUTFILE
rm -f $TMPFILE
else
if test $# -lt 1; then
echo "Usage: ${tempname} <process-id> [gdb-mess-file]" 1>&2
exit 1
fi
if test $# -eq 2; then
messfile=$2
fi
if test ! -r /proc/$1; then
echo "${tempname}: process $1 not found." 1>&2
exit 1
fi
# GDB doesn't allow "thread apply all bt" when the process isn't
# threaded; need to peek at the process to determine if that or the
# simpler "bt" should be used.
# The leading spaces are needed for have_eval_command's replacement.
backtrace="bt"
if test -d /proc/$1/task ; then
# Newer kernel; has a task/ directory.
if test `ls /proc/$1/task | wc -l` -gt 1 2>/dev/null ; then
backtrace="thread apply all bt"
fi
elif test -f /proc/$1/maps ; then
# Older kernel; go by it loading libpthread.
if grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
backtrace="thread apply all bt"
fi
fi
GDB=${GDB:-gdb}
# Run GDB, strip out unwanted noise.
have_eval_command=`gdb --help 2>&1 |grep eval-command`
if ! test "x$have_eval_command" = "x"; then
$GDB --batch --eval-command="$backtrace" /proc/$1/exe $1 2>&1 < /dev/null |
sed -n \
-e 's,\x1B\[[0-9;]*[a-zA-Z],,g' \
-e 's/^(gdb) //' \
-e '/^#/p' \
-e '/^ /p' \
-e 's/\(^Thread.*\)/@\1/p' | tr '@' '\n' > $OUTFILE
else
$GDB -q -n /proc/$1/exe $1 <<EOF 2>&1 |
$backtrace
EOF
sed -n \
-e 's/^(gdb) //' \
-e '/^#/p' \
-e '/^ /p' \
-e 's/\(^Thread.*\)/@\1/p' | tr '@' '\n' > $OUTFILE
fi
fi
# Analyze the stack.
# The recommendations are based on the following assumptions:
# * More often than not, the crash is caused by user code.
# * The crash can be caused by the user's interpreted code,
# in which case sighandler() is called from CINT (G__...)
# * The crash can be called by the user's library code,
# in which case sighandler() is called from non-CINT and
# it's worth dumping the stack frames.
# * The user doesn't call CINT directly, so whenever we reach
# a stack frame with "G__" we can stop.
# * The crash is caused by only one thread, the one which
# invokes sighandler()
if ! test "x$OUTFILE" = "x/dev/stdout"; then
frames=""
wantthread=""
skip=""
ininterp=""
signal=""
while IFS= read line; do
case $line in
*'<signal handler called>'* )
# this frame doesn't exist
skip="yes"
frames=""
continue
;;
Thread* )
if test "x$wantthread" = "xyes"; then
break
fi
skip=""
frames=""
;;
'#'* )
skip=""
;;
esac
if test "x${skip}" = "x"; then
tag=`echo $line|sed 's,^.*[0-9a-fA-F] in ,,'`
if test "x$ininterp" = "xcheck next"; then
ininterp="check this"
fi
case $tag in
SigHandler* )
signal=`echo $line | sed 's/^.*\(kSig[^)]*\).*$/\1/'`
wantthread="yes"
ininterp="check next"
frames=""
skip="yes"
;;
sighandler* | TUnixSystem::DispatchSignals* )
wantthread="yes"
ininterp="check next"
frames=""
skip="yes"
;;
G__* | Cint::G__* )
if test "x$ininterp" = "xcheck this"; then
ininterp="yes"
break
elif test "x$ininterp" = "xno"; then
break
fi
skip="yes"
;;
*::ProcessLine* | TRint::HandleTermInput* )
# frames to ignore (upper end)
if test "x$ininterp" = "xcheck this"; then
ininterp="no"
break
fi
if test "x$wantthread" = "xyes"; then
break;
fi
skip="yes"
;;
* )
if test "x${skip}" = "x"; then
if test "x$frames" = "x"; then
frames="$line"
else
frames="$frames
$line"
fi
fi
if test "x$ininterp" = "xcheck this"; then
ininterp="no"
fi
;;
esac
fi
done < $OUTFILE
# Only print the informative text if we actually have a crash
# but not when TSystem::Stacktrace() was called.
if ! test "x$ininterp" = "x"; then
if ! test "x$signal" = "x"; then
signal=' ('${signal}')'
fi
echo ""
echo ""
echo ""
echo "==========================================================="
echo "There was a crash${signal}."
echo "This is the entire stack trace of all threads:"
echo "==========================================================="
fi
cat $OUTFILE
if ! test "x$ininterp" = "x"; then
echo "==========================================================="
if test "x$ininterp" = "xyes"; then
echo ""
echo ""
if test -f "$messfile"; then
cat $messfile | tr '%' '\n'
else
echo 'The crash is most likely caused by a problem in your script.'
echo 'Try to compile it (.L myscript.C+g) and fix any errors. If your code'
echo 'links against ROOT, try to recompile with debugging information enabled.'
echo 'If you see question marks in one or more lines of the stack trace, try'
echo 'exporting the environment variable CLING_DEBUG=1 and running again.'
echo 'You may get help by asking at the ROOT forum https://root.cern/forum'
echo 'preferably using the command (.forum bug) in the ROOT prompt.'
echo 'If you are really convinced it is a bug in ROOT then please submit a report'
echo 'at https://root.cern/bugs or (preferably) using the command (.gh bug) in'
echo 'the ROOT prompt. Please post the ENTIRE stack trace'
echo 'from above as an attachment in addition to anything else'
echo 'that might help us fixing this issue.'
fi
elif ! test "x$frames" = "x"; then
echo ""
echo ""
if test -f "$messfile"; then
cat $messfile | tr '%' '\n'
else
echo 'The lines below might hint at the cause of the crash. If you see question'
echo 'marks as part of the stack trace, try to recompile with debugging information'
echo 'enabled and export CLING_DEBUG=1 environment variable before running.'
echo 'You may get help by asking at the ROOT forum https://root.cern/forum'
echo 'preferably using the command (.forum bug) in the ROOT prompt.'
echo 'Only if you are really convinced it is a bug in ROOT then please submit a'
echo 'report at https://root.cern/bugs or (preferably) using the command (.gh bug) in'
echo 'the ROOT prompt. Please post the ENTIRE stack trace'
echo 'from above as an attachment in addition to anything else'
echo 'that might help us fixing this issue.'
fi
echo "==========================================================="
echo "$frames"
echo "==========================================================="
fi
echo ""
echo ""
fi
rm -f $OUTFILE $messfile
fi