mirror of
https://github.com/git/git.git
synced 2024-11-24 10:26:17 +08:00
71b0251cdd
This is incompatible with previous versions because an exit code of 125 used to mark current commit as "bad". But hopefully this exit code is not much used by test scripts or other programs. (126 and 127 are used by POSIX compliant shells to mean "found but not executable" and "command not found", respectively.) Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
459 lines
10 KiB
Bash
Executable File
459 lines
10 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
USAGE='[start|bad|good|next|reset|visualize|replay|log|run]'
|
|
LONG_USAGE='git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
|
|
reset bisect state and start bisection.
|
|
git bisect bad [<rev>]
|
|
mark <rev> a known-bad revision.
|
|
git bisect good [<rev>...]
|
|
mark <rev>... known-good revisions.
|
|
git bisect next
|
|
find next bisection to test and check it out.
|
|
git bisect reset [<branch>]
|
|
finish bisection search and go back to branch.
|
|
git bisect visualize
|
|
show bisect status in gitk.
|
|
git bisect replay <logfile>
|
|
replay bisection log.
|
|
git bisect log
|
|
show bisect log.
|
|
git bisect skip [<rev>...]
|
|
mark <rev>... untestable revisions.
|
|
git bisect run <cmd>...
|
|
use <cmd>... to automatically bisect.'
|
|
|
|
. git-sh-setup
|
|
require_work_tree
|
|
|
|
sq() {
|
|
@@PERL@@ -e '
|
|
for (@ARGV) {
|
|
s/'\''/'\'\\\\\'\''/g;
|
|
print " '\''$_'\''";
|
|
}
|
|
print "\n";
|
|
' "$@"
|
|
}
|
|
|
|
bisect_autostart() {
|
|
test -d "$GIT_DIR/refs/bisect" || {
|
|
echo >&2 'You need to start by "git bisect start"'
|
|
if test -t 0
|
|
then
|
|
echo >&2 -n 'Do you want me to do it for you [Y/n]? '
|
|
read yesno
|
|
case "$yesno" in
|
|
[Nn]*)
|
|
exit ;;
|
|
esac
|
|
bisect_start
|
|
else
|
|
exit 1
|
|
fi
|
|
}
|
|
}
|
|
|
|
bisect_start() {
|
|
#
|
|
# Verify HEAD. If we were bisecting before this, reset to the
|
|
# top-of-line master first!
|
|
#
|
|
head=$(GIT_DIR="$GIT_DIR" git symbolic-ref HEAD) ||
|
|
die "Bad HEAD - I need a symbolic ref"
|
|
case "$head" in
|
|
refs/heads/bisect)
|
|
if [ -s "$GIT_DIR/head-name" ]; then
|
|
branch=`cat "$GIT_DIR/head-name"`
|
|
else
|
|
branch=master
|
|
fi
|
|
git checkout $branch || exit
|
|
;;
|
|
refs/heads/*)
|
|
[ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree"
|
|
echo "$head" | sed 's#^refs/heads/##' >"$GIT_DIR/head-name"
|
|
;;
|
|
*)
|
|
die "Bad HEAD - strange symbolic ref"
|
|
;;
|
|
esac
|
|
|
|
#
|
|
# Get rid of any old bisect state
|
|
#
|
|
bisect_clean_state
|
|
mkdir "$GIT_DIR/refs/bisect"
|
|
|
|
#
|
|
# Check for one bad and then some good revisions.
|
|
#
|
|
has_double_dash=0
|
|
for arg; do
|
|
case "$arg" in --) has_double_dash=1; break ;; esac
|
|
done
|
|
orig_args=$(sq "$@")
|
|
bad_seen=0
|
|
while [ $# -gt 0 ]; do
|
|
arg="$1"
|
|
case "$arg" in
|
|
--)
|
|
shift
|
|
break
|
|
;;
|
|
*)
|
|
rev=$(git rev-parse --verify "$arg^{commit}" 2>/dev/null) || {
|
|
test $has_double_dash -eq 1 &&
|
|
die "'$arg' does not appear to be a valid revision"
|
|
break
|
|
}
|
|
case $bad_seen in
|
|
0) state='bad' ; bad_seen=1 ;;
|
|
*) state='good' ;;
|
|
esac
|
|
bisect_write "$state" "$rev" 'nolog'
|
|
shift
|
|
;;
|
|
esac
|
|
done
|
|
|
|
sq "$@" >"$GIT_DIR/BISECT_NAMES"
|
|
echo "git-bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG"
|
|
bisect_auto_next
|
|
}
|
|
|
|
bisect_write() {
|
|
state="$1"
|
|
rev="$2"
|
|
nolog="$3"
|
|
case "$state" in
|
|
bad) tag="$state" ;;
|
|
good|skip) tag="$state"-"$rev" ;;
|
|
*) die "Bad bisect_write argument: $state" ;;
|
|
esac
|
|
echo "$rev" >"$GIT_DIR/refs/bisect/$tag"
|
|
echo "# $state: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
|
|
test -z "$nolog" && echo "git-bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
|
|
}
|
|
|
|
bisect_state() {
|
|
bisect_autostart
|
|
state=$1
|
|
case "$#,$state" in
|
|
0,*)
|
|
die "Please call 'bisect_state' with at least one argument." ;;
|
|
1,bad|1,good|1,skip)
|
|
rev=$(git rev-parse --verify HEAD) ||
|
|
die "Bad rev input: HEAD"
|
|
bisect_write "$state" "$rev" ;;
|
|
2,bad)
|
|
rev=$(git rev-parse --verify "$2^{commit}") ||
|
|
die "Bad rev input: $2"
|
|
bisect_write "$state" "$rev" ;;
|
|
*,good|*,skip)
|
|
shift
|
|
revs=$(git rev-parse --revs-only --no-flags "$@") &&
|
|
test '' != "$revs" || die "Bad rev input: $@"
|
|
for rev in $revs
|
|
do
|
|
rev=$(git rev-parse --verify "$rev^{commit}") ||
|
|
die "Bad rev commit: $rev^{commit}"
|
|
bisect_write "$state" "$rev"
|
|
done ;;
|
|
*)
|
|
usage ;;
|
|
esac
|
|
bisect_auto_next
|
|
}
|
|
|
|
bisect_next_check() {
|
|
missing_good= missing_bad=
|
|
git show-ref -q --verify refs/bisect/bad || missing_bad=t
|
|
test -n "$(git for-each-ref "refs/bisect/good-*")" || missing_good=t
|
|
|
|
case "$missing_good,$missing_bad,$1" in
|
|
,,*)
|
|
: have both good and bad - ok
|
|
;;
|
|
*,)
|
|
# do not have both but not asked to fail - just report.
|
|
false
|
|
;;
|
|
t,,good)
|
|
# have bad but not good. we could bisect although
|
|
# this is less optimum.
|
|
echo >&2 'Warning: bisecting only with a bad commit.'
|
|
if test -t 0
|
|
then
|
|
printf >&2 'Are you sure [Y/n]? '
|
|
case "$(read yesno)" in [Nn]*) exit 1 ;; esac
|
|
fi
|
|
: bisect without good...
|
|
;;
|
|
*)
|
|
THEN=''
|
|
test -d "$GIT_DIR/refs/bisect" || {
|
|
echo >&2 'You need to start by "git bisect start".'
|
|
THEN='then '
|
|
}
|
|
echo >&2 'You '$THEN'need to give me at least one good' \
|
|
'and one bad revisions.'
|
|
echo >&2 '(You can use "git bisect bad" and' \
|
|
'"git bisect good" for that.)'
|
|
exit 1 ;;
|
|
esac
|
|
}
|
|
|
|
bisect_auto_next() {
|
|
bisect_next_check && bisect_next || :
|
|
}
|
|
|
|
filter_skipped() {
|
|
_eval="$1"
|
|
_skip="$2"
|
|
|
|
if [ -z "$_skip" ]; then
|
|
eval $_eval
|
|
return
|
|
fi
|
|
|
|
# Let's parse the output of:
|
|
# "git rev-list --bisect-vars --bisect-all ..."
|
|
eval $_eval | while read hash line
|
|
do
|
|
case "$VARS,$FOUND,$TRIED,$hash" in
|
|
# We display some vars.
|
|
1,*,*,*) echo "$hash $line" ;;
|
|
|
|
# Split line.
|
|
,*,*,---*) ;;
|
|
|
|
# We had nothing to search.
|
|
,,,bisect_rev*)
|
|
echo "bisect_rev="
|
|
VARS=1
|
|
;;
|
|
|
|
# We did not find a good bisect rev.
|
|
# This should happen only if the "bad"
|
|
# commit is also a "skip" commit.
|
|
,,*,bisect_rev*)
|
|
echo "bisect_rev=$TRIED"
|
|
VARS=1
|
|
;;
|
|
|
|
# We are searching.
|
|
,,*,*)
|
|
TRIED="${TRIED:+$TRIED|}$hash"
|
|
case "$_skip" in
|
|
*$hash*) ;;
|
|
*)
|
|
echo "bisect_rev=$hash"
|
|
echo "bisect_tried=\"$TRIED\""
|
|
FOUND=1
|
|
;;
|
|
esac
|
|
;;
|
|
|
|
# We have already found a rev to be tested.
|
|
,1,*,bisect_rev*) VARS=1 ;;
|
|
,1,*,*) ;;
|
|
|
|
# ???
|
|
*) die "filter_skipped error " \
|
|
"VARS: '$VARS' " \
|
|
"FOUND: '$FOUND' " \
|
|
"TRIED: '$TRIED' " \
|
|
"hash: '$hash' " \
|
|
"line: '$line'"
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
exit_if_skipped_commits () {
|
|
_tried=$1
|
|
if expr "$_tried" : ".*[|].*" > /dev/null ; then
|
|
echo "There are only 'skip'ped commit left to test."
|
|
echo "The first bad commit could be any of:"
|
|
echo "$_tried" | sed -e 's/[|]/\n/g'
|
|
echo "We cannot bisect more!"
|
|
exit 2
|
|
fi
|
|
}
|
|
|
|
bisect_next() {
|
|
case "$#" in 0) ;; *) usage ;; esac
|
|
bisect_autostart
|
|
bisect_next_check good
|
|
|
|
skip=$(git for-each-ref --format='%(objectname)' \
|
|
"refs/bisect/skip-*" | tr '[\012]' ' ') || exit
|
|
|
|
BISECT_OPT=''
|
|
test -n "$skip" && BISECT_OPT='--bisect-all'
|
|
|
|
bad=$(git rev-parse --verify refs/bisect/bad) &&
|
|
good=$(git for-each-ref --format='^%(objectname)' \
|
|
"refs/bisect/good-*" | tr '[\012]' ' ') &&
|
|
eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
|
|
eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
|
|
eval=$(filter_skipped "$eval" "$skip") &&
|
|
eval "$eval" || exit
|
|
|
|
if [ -z "$bisect_rev" ]; then
|
|
echo "$bad was both good and bad"
|
|
exit 1
|
|
fi
|
|
if [ "$bisect_rev" = "$bad" ]; then
|
|
exit_if_skipped_commits "$bisect_tried"
|
|
echo "$bisect_rev is first bad commit"
|
|
git diff-tree --pretty $bisect_rev
|
|
exit 0
|
|
fi
|
|
|
|
# We should exit here only if the "bad"
|
|
# commit is also a "skip" commit (see above).
|
|
exit_if_skipped_commits "$bisect_rev"
|
|
|
|
echo "Bisecting: $bisect_nr revisions left to test after this"
|
|
echo "$bisect_rev" >"$GIT_DIR/refs/heads/new-bisect"
|
|
git checkout -q new-bisect || exit
|
|
mv "$GIT_DIR/refs/heads/new-bisect" "$GIT_DIR/refs/heads/bisect" &&
|
|
GIT_DIR="$GIT_DIR" git symbolic-ref HEAD refs/heads/bisect
|
|
git show-branch "$bisect_rev"
|
|
}
|
|
|
|
bisect_visualize() {
|
|
bisect_next_check fail
|
|
not=`cd "$GIT_DIR/refs" && echo bisect/good-*`
|
|
eval gitk bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES")
|
|
}
|
|
|
|
bisect_reset() {
|
|
case "$#" in
|
|
0) if [ -s "$GIT_DIR/head-name" ]; then
|
|
branch=`cat "$GIT_DIR/head-name"`
|
|
else
|
|
branch=master
|
|
fi ;;
|
|
1) git show-ref --verify --quiet -- "refs/heads/$1" ||
|
|
die "$1 does not seem to be a valid branch"
|
|
branch="$1" ;;
|
|
*)
|
|
usage ;;
|
|
esac
|
|
if git checkout "$branch"; then
|
|
rm -f "$GIT_DIR/head-name"
|
|
bisect_clean_state
|
|
fi
|
|
}
|
|
|
|
bisect_clean_state() {
|
|
rm -fr "$GIT_DIR/refs/bisect"
|
|
rm -f "$GIT_DIR/refs/heads/bisect"
|
|
rm -f "$GIT_DIR/BISECT_LOG"
|
|
rm -f "$GIT_DIR/BISECT_NAMES"
|
|
rm -f "$GIT_DIR/BISECT_RUN"
|
|
}
|
|
|
|
bisect_replay () {
|
|
test -r "$1" || die "cannot read $1 for replaying"
|
|
bisect_reset
|
|
while read bisect command rev
|
|
do
|
|
test "$bisect" = "git-bisect" || continue
|
|
case "$command" in
|
|
start)
|
|
cmd="bisect_start $rev"
|
|
eval "$cmd" ;;
|
|
good|bad|skip)
|
|
bisect_write "$command" "$rev" ;;
|
|
*)
|
|
die "?? what are you talking about?" ;;
|
|
esac
|
|
done <"$1"
|
|
bisect_auto_next
|
|
}
|
|
|
|
bisect_run () {
|
|
bisect_next_check fail
|
|
|
|
while true
|
|
do
|
|
echo "running $@"
|
|
"$@"
|
|
res=$?
|
|
|
|
# Check for really bad run error.
|
|
if [ $res -lt 0 -o $res -ge 128 ]; then
|
|
echo >&2 "bisect run failed:"
|
|
echo >&2 "exit code $res from '$@' is < 0 or >= 128"
|
|
exit $res
|
|
fi
|
|
|
|
# Find current state depending on run success or failure.
|
|
# A special exit code of 125 means cannot test.
|
|
if [ $res -eq 125 ]; then
|
|
state='skip'
|
|
elif [ $res -gt 0 ]; then
|
|
state='bad'
|
|
else
|
|
state='good'
|
|
fi
|
|
|
|
# We have to use a subshell because "bisect_state" can exit.
|
|
( bisect_state $state > "$GIT_DIR/BISECT_RUN" )
|
|
res=$?
|
|
|
|
cat "$GIT_DIR/BISECT_RUN"
|
|
|
|
if grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
|
|
> /dev/null; then
|
|
echo >&2 "bisect run cannot continue any more"
|
|
exit $res
|
|
fi
|
|
|
|
if [ $res -ne 0 ]; then
|
|
echo >&2 "bisect run failed:"
|
|
echo >&2 "'bisect_state $state' exited with error code $res"
|
|
exit $res
|
|
fi
|
|
|
|
if grep "is first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then
|
|
echo "bisect run success"
|
|
exit 0;
|
|
fi
|
|
|
|
done
|
|
}
|
|
|
|
|
|
case "$#" in
|
|
0)
|
|
usage ;;
|
|
*)
|
|
cmd="$1"
|
|
shift
|
|
case "$cmd" in
|
|
start)
|
|
bisect_start "$@" ;;
|
|
bad|good|skip)
|
|
bisect_state "$cmd" "$@" ;;
|
|
next)
|
|
# Not sure we want "next" at the UI level anymore.
|
|
bisect_next "$@" ;;
|
|
visualize)
|
|
bisect_visualize "$@" ;;
|
|
reset)
|
|
bisect_reset "$@" ;;
|
|
replay)
|
|
bisect_replay "$@" ;;
|
|
log)
|
|
cat "$GIT_DIR/BISECT_LOG" ;;
|
|
run)
|
|
bisect_run "$@" ;;
|
|
*)
|
|
usage ;;
|
|
esac
|
|
esac
|