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#!/bin/bash
# Run an interactive git bisect on wireshark (wireshark-gtk by default)
#
# Usage:
# 1. Mark commits as good/bad (see man git-bisect)
# git bisect start <bad commit> <good commit>
# 2. Optionally change the default target:
# export WIRESHARK_BIN=wireshark-gtk # for wireshark-gtk
# export WIRESHARK_BIN= # build everything
# 3. Start the interactive bisect:
# git bisect run ../wireshark-notes/bisect-wireshark
# 4. After the script returns, the faulty commit is identified.
# Wireshark program to build and launch (leave it empty to build everything)
WIRESHARK_BIN=${WIRESHARK_BIN-wireshark}
OUTDIR=/tmp/wsbuild
buildlogdir=/tmp/wslogs
SRCDIR=$(git rev-parse --show-toplevel)
ver=$(git describe)
buildlog=$buildlogdir/build-$(date +%Y-%m-%d-%H%M%S)-${ver}.txt
mkdir -p "$buildlogdir" "$OUTDIR"
if ! cd "$OUTDIR"; then
echo "Failed to create output dir"
exit 128 # abort
fi
make_local() {
CFLAGS="-fsanitize=address -fsanitize=undefined -fdiagnostics-color=auto"
set -x # Print commands as they are executed
# Configure
time cmake "$SRCDIR" -DCMAKE_BUILD_TYPE=Debug \
-DCMAKE_C_FLAGS="$CFLAGS" -DCMAKE_CXX_FLAGS="$CFLAGS" &&
# Build
time make -C "$OUTDIR" -j$(nproc) $WIRESHARK_BIN
}
# Export variables and build locally (need recent Bash versions, the one
# included with Ubuntu 12.04 won't do)
script -e -c "date -R; $(declare -p WIRESHARK_BIN SRCDIR OUTDIR);
$(declare -pf make_local); time make_local" "$buildlog"
rc=$?
if [ $rc = 0 ]; then
echo "Build OK"
else
printf '\e[1;31m%\e[m\n' "Build failed with $rc"
fi
# Run it and interactively ask the user to tell whether it passed or not
while true; do
if [ -n "$WIRESHARK_BIN" ]; then
"$OUTDIR/run/$WIRESHARK_BIN"
fi
cat <<EOF
Commit: $ver
Did it work?
0) Yes.
1) No.
2) Not sure (skip this commit).
3) Abort bisect, let me manually check.
x) I need to re-check (run $WIRESHARK_BIN again).
EOF
read -p 'Your choice: ' choice
case $choice in
0)
echo Pass
exit 0
;;
1)
echo FAIL
exit 1
;;
2)
echo Skip
exit 125
;;
3)
echo Abort
exit 128
;;
x)
;;
*)
echo "Unrecognized option '$choice'"
;;
esac
done
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