git/git-bisect.sh

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[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
#!/bin/sh
USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
LONG_USAGE='git bisect help
print this long help message.
git bisect start [--term-{old,good}=<term> --term-{new,bad}=<term>]
[--no-checkout] [<bad> [<good>...]] [--] [<pathspec>...]
reset bisect state and start bisection.
bisect: add the terms old/new When not looking for a regression during a bisect but for a fix or a change in another given property, it can be confusing to use 'good' and 'bad'. This patch introduce `git bisect new` and `git bisect old` as an alternative to 'bad' and good': the commits which have a certain property must be marked as `new` and the ones which do not as `old`. The output will be the first commit after the change in the property. During a new/old bisect session you cannot use bad/good commands and vice-versa. Some commands are still not available for old/new: * git rev-list --bisect does not treat the revs/bisect/new and revs/bisect/old-SHA1 files. Old discussions: - http://thread.gmane.org/gmane.comp.version-control.git/86063 introduced bisect fix unfixed to find fix. - http://thread.gmane.org/gmane.comp.version-control.git/182398 discussion around bisect yes/no or old/new. - http://thread.gmane.org/gmane.comp.version-control.git/199758 last discussion and reviews New discussions: - http://thread.gmane.org/gmane.comp.version-control.git/271320 ( v2 1/7-4/7 ) - http://comments.gmane.org/gmane.comp.version-control.git/271343 ( v2 5/7-7/7 ) Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr> Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr> Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr> Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr> Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr> Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr> Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29 15:40:33 +00:00
git bisect (bad|new) [<rev>]
mark <rev> a known-bad revision/
a revision after change in a given property.
git bisect (good|old) [<rev>...]
mark <rev>... known-good revisions/
revisions before change in a given property.
git bisect terms [--term-good | --term-bad]
show the terms used for old and new commits (default: bad, good)
git bisect skip [(<rev>|<range>)...]
mark <rev>... untestable revisions.
git bisect next
find next bisection to test and check it out.
git bisect reset [<commit>]
finish bisection search and go back to commit.
git bisect (visualize|view)
show bisect status in gitk.
git bisect replay <logfile>
replay bisection log.
git bisect log
show bisect log.
git bisect run <cmd>...
use <cmd>... to automatically bisect.
Please use "git help bisect" to get the full man page.'
OPTIONS_SPEC=
. git-sh-setup
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
TERM_BAD=bad
TERM_GOOD=good
bisect_head()
{
if test -f "$GIT_DIR/BISECT_HEAD"
then
echo BISECT_HEAD
else
echo HEAD
fi
}
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
bisect_autostart() {
test -s "$GIT_DIR/BISECT_START" || {
gettextln "You need to start by \"git bisect start\"" >&2
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
if test -t 0
then
# TRANSLATORS: Make sure to include [Y] and [n] in your
# translation. The program will only accept English input
# at this point.
gettext "Do you want me to do it for you [Y/n]? " >&2
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
read yesno
case "$yesno" in
[Nn]*)
exit ;;
esac
bisect_start
else
exit 1
fi
}
}
bisect_start() {
git bisect--helper --bisect-start $@ || exit
#
# Change state.
# In case of mistaken revs or checkout error, or signals received,
# "bisect_auto_next" below may exit or misbehave.
# We have to trap this to be able to clean up using
# "bisect_clean_state".
#
trap 'git bisect--helper --bisect-clean-state' 0
trap 'exit 255' 1 2 3 15
#
# Check if we can proceed to the next bisect state.
#
get_terms
bisect_auto_next
trap '-' 0
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
}
bisect_skip() {
all=''
for arg in "$@"
do
case "$arg" in
*..*)
revs=$(git rev-list "$arg") || die "$(eval_gettext "Bad rev input: \$arg")" ;;
*)
revs=$(git rev-parse --sq-quote "$arg") ;;
esac
all="$all $revs"
done
eval bisect_state 'skip' $all
}
bisect_state() {
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
bisect_autostart
state=$1
git bisect--helper --check-and-set-terms $state $TERM_GOOD $TERM_BAD || exit
get_terms
case "$#,$state" in
0,*)
die "Please call 'bisect_state' with at least one argument." ;;
1,"$TERM_BAD"|1,"$TERM_GOOD"|1,skip)
bisected_head=$(bisect_head)
rev=$(git rev-parse --verify "$bisected_head") ||
die "$(eval_gettext "Bad rev input: \$bisected_head")"
git bisect--helper --bisect-write "$state" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit
git bisect--helper --check-expected-revs "$rev" ;;
2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip)
shift
hash_list=''
for rev in "$@"
do
sha=$(git rev-parse --verify "$rev^{commit}") ||
die "$(eval_gettext "Bad rev input: \$rev")"
hash_list="$hash_list $sha"
done
for rev in $hash_list
do
git bisect--helper --bisect-write "$state" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit
done
git bisect--helper --check-expected-revs $hash_list ;;
*,"$TERM_BAD")
die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;;
*)
usage ;;
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
esac
bisect_auto_next
}
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
bisect_auto_next() {
git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD && bisect_next || :
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
}
bisect_next() {
case "$#" in 0) ;; *) usage ;; esac
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
bisect_autostart
git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD $TERM_GOOD|| exit
# Perform all bisection computation, display and checkout
git bisect--helper --next-all $(test -f "$GIT_DIR/BISECT_HEAD" && echo --no-checkout)
res=$?
# Check if we should exit because bisection is finished
if test $res -eq 10
then
bad_rev=$(git show-ref --hash --verify refs/bisect/$TERM_BAD)
bad_commit=$(git show-branch $bad_rev)
echo "# first $TERM_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
exit 0
elif test $res -eq 2
then
echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG"
good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$TERM_GOOD-*")
for skipped in $(git rev-list refs/bisect/$TERM_BAD --not $good_revs)
do
skipped_commit=$(git show-branch $skipped)
echo "# possible first $TERM_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
done
exit $res
fi
# Check for an error in the bisection process
test $res -ne 0 && exit $res
return 0
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
}
bisect_visualize() {
git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
if test $# = 0
then
if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
type gitk >/dev/null 2>&1
then
set gitk
else
set git log
fi
else
case "$1" in
git*|tig) ;;
-*) set git log "$@" ;;
*) set git "$@" ;;
esac
fi
eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
}
bisect_replay () {
file="$1"
test "$#" -eq 1 || die "$(gettext "No logfile given")"
test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
git bisect--helper --bisect-reset || exit
while read git bisect command rev
do
test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
if test "$git" = "git-bisect"
then
rev="$command"
command="$bisect"
fi
get_terms
git bisect--helper --check-and-set-terms "$command" "$TERM_GOOD" "$TERM_BAD" || exit
get_terms
case "$command" in
start)
cmd="bisect_start $rev"
eval "$cmd" ;;
"$TERM_GOOD"|"$TERM_BAD"|skip)
git bisect--helper --bisect-write "$command" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit;;
terms)
git bisect--helper --bisect-terms $rev || exit;;
*)
die "$(gettext "?? what are you talking about?")" ;;
esac
done <"$file"
bisect_auto_next
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
}
bisect_run () {
git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
while true
do
command="$@"
eval_gettextln "running \$command"
"$@"
res=$?
# Check for really bad run error.
if [ $res -lt 0 -o $res -ge 128 ]
then
eval_gettextln "bisect run failed:
exit code \$res from '\$command' is < 0 or >= 128" >&2
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 [ $res -gt 0 ]
then
state="$TERM_BAD"
else
state="$TERM_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 sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
>/dev/null
then
gettextln "bisect run cannot continue any more" >&2
exit $res
fi
if [ $res -ne 0 ]
then
eval_gettextln "bisect run failed:
'bisect_state \$state' exited with error code \$res" >&2
exit $res
fi
if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
then
gettextln "bisect run success"
exit 0;
fi
done
}
bisect_log () {
test -s "$GIT_DIR/BISECT_LOG" || die "$(gettext "We are not bisecting.")"
cat "$GIT_DIR/BISECT_LOG"
}
get_terms () {
if test -s "$GIT_DIR/BISECT_TERMS"
then
{
read TERM_BAD
read TERM_GOOD
} <"$GIT_DIR/BISECT_TERMS"
fi
}
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
case "$#" in
0)
usage ;;
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
*)
cmd="$1"
get_terms
shift
case "$cmd" in
help)
git bisect -h ;;
start)
bisect_start "$@" ;;
bisect: add the terms old/new When not looking for a regression during a bisect but for a fix or a change in another given property, it can be confusing to use 'good' and 'bad'. This patch introduce `git bisect new` and `git bisect old` as an alternative to 'bad' and good': the commits which have a certain property must be marked as `new` and the ones which do not as `old`. The output will be the first commit after the change in the property. During a new/old bisect session you cannot use bad/good commands and vice-versa. Some commands are still not available for old/new: * git rev-list --bisect does not treat the revs/bisect/new and revs/bisect/old-SHA1 files. Old discussions: - http://thread.gmane.org/gmane.comp.version-control.git/86063 introduced bisect fix unfixed to find fix. - http://thread.gmane.org/gmane.comp.version-control.git/182398 discussion around bisect yes/no or old/new. - http://thread.gmane.org/gmane.comp.version-control.git/199758 last discussion and reviews New discussions: - http://thread.gmane.org/gmane.comp.version-control.git/271320 ( v2 1/7-4/7 ) - http://comments.gmane.org/gmane.comp.version-control.git/271343 ( v2 5/7-7/7 ) Signed-off-by: Antoine Delaite <antoine.delaite@ensimag.grenoble-inp.fr> Signed-off-by: Louis Stuber <stuberl@ensimag.grenoble-inp.fr> Signed-off-by: Valentin Duperray <Valentin.Duperray@ensimag.imag.fr> Signed-off-by: Franck Jonas <Franck.Jonas@ensimag.imag.fr> Signed-off-by: Lucien Kong <Lucien.Kong@ensimag.imag.fr> Signed-off-by: Thomas Nguy <Thomas.Nguy@ensimag.imag.fr> Signed-off-by: Huynh Khoi Nguyen Nguyen <Huynh-Khoi-Nguyen.Nguyen@ensimag.imag.fr> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-29 15:40:33 +00:00
bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
bisect_state "$cmd" "$@" ;;
skip)
bisect_skip "$@" ;;
next)
# Not sure we want "next" at the UI level anymore.
bisect_next "$@" ;;
visualize|view)
bisect_visualize "$@" ;;
reset)
git bisect--helper --bisect-reset "$@" ;;
replay)
bisect_replay "$@" ;;
log)
bisect_log ;;
run)
bisect_run "$@" ;;
terms)
git bisect--helper --bisect-terms "$@" || exit;;
*)
usage ;;
esac
[PATCH] Making it easier to find which change introduced a bug This adds a new "git bisect" command. - "git bisect start" start bisection search. - "git bisect bad <rev>" mark some version known-bad (if no arguments, then current HEAD) - "git bisect good <revs>..." mark some versions known-good (if no arguments, then current HEAD) - "git bisect reset <branch>" done with bisection search and go back to your work (if no arguments, then "master"). The way you use it is: git bisect start git bisect bad # Current version is bad git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version # tested that was good When you give at least one bad and one good versions, it will bisect the revision tree and say something like: Bisecting: 675 revisions left to test after this and check out the state in the middle. Now, compile that kernel, and boot it. Now, let's say that this booted kernel works fine, then just do git bisect good # this one is good which will now say Bisecting: 337 revisions left to test after this and you continue along, compiling that one, testing it, and depending on whether it is good or bad, you say "git bisect good" or "git bisect bad", and ask for the next bisection. Until you have no more left, and you'll have been left with the first bad kernel rev in "refs/bisect/bad". Oh, and then after you want to reset to the original head, do a git bisect reset to get back to the master branch, instead of being in one of the bisection branches ("git bisect start" will do that for you too, actually: it will reset the bisection state, and before it does that it checks that you're not using some old bisection branch). Not really any harder than doing series of "quilt push" and "quilt pop", now is it? [jc: This patch is a rework based on what Linus posted to the list. The changes are: - The original introduced four separate commands, which was three too many, so I merged them into one with subcommands. - Since the next thing you would want to do after telling it "bad" and "good" is always to bisect, this version does it automatically for you. - I think the termination condition was wrong. The original version checked if the set of revisions reachable from next bisection but not rechable from any of the known good ones is empty, but if the current bisection was a bad one, this would not terminate, so I changed it to terminate it when the set becomes a singleton or empty. - Removed the use of shell array variable. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-07-30 17:08:20 +00:00
esac