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From: Phillip Wood <phillip.wood123@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Junio C Hamano <gitster@pobox.com>,
	Elijah Newren <newren@gmail.com>, Duy Nguyen <pclouds@gmail.com>,
	Alban Gruin <alban.gruin@gmail.com>,
	Josh Steadmon <steadmon@google.com>,
	Ævar Arnfjörð Bjarmason  <avarab@gmail.com>,
	Phillip Wood <phillip.wood@dunelm.org.uk>
Subject: [PATCH v1 01/12] sequencer: always discard index after checkout
Date: Wed, 17 Apr 2019 15:30:33 +0100
Message-ID: <20190417143044.17655-2-phillip.wood123@gmail.com> (raw)
In-Reply-To: <20190417143044.17655-1-phillip.wood123@gmail.com>

From: Phillip Wood <phillip.wood@dunelm.org.uk>

As the checkout runs in a separate process our index will be out of date
so it should be discarded. The existing callers are not doing this
consistently so do it here to avoid the callers having to worry about
it.

This fixes some test failures that happen if do_interactive_rebase() is
called without forking rebase--interactive which we will implement
shortly. Running

  git rebase -i master topic

starting on master created empty todo lists because all the commits in
topic were marked as cherry-picks. After topic was checked out in
prepare_branch_to_be_rebased() the working tree contained the contents
from topic but the index contained master and the cache entries were
still valid. This meant that diff_populate_filespec() which loads the
blobs when calculating patch-id's ended up reading the contents for
master from the working tree which actually contained topic.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 builtin/rebase--interactive.c |  2 +-
 sequencer.c                   | 27 +++++++++++++++++----------
 sequencer.h                   |  3 ++-
 3 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/builtin/rebase--interactive.c b/builtin/rebase--interactive.c
index 4535523bf5..d1a4ac1b84 100644
--- a/builtin/rebase--interactive.c
+++ b/builtin/rebase--interactive.c
@@ -171,7 +171,7 @@ static int do_interactive_rebase(struct replay_opts *opts, unsigned flags,
 	struct argv_array make_script_args = ARGV_ARRAY_INIT;
 	struct todo_list todo_list = TODO_LIST_INIT;
 
-	if (prepare_branch_to_be_rebased(opts, switch_to))
+	if (prepare_branch_to_be_rebased(the_repository, opts, switch_to))
 		return -1;
 
 	if (get_revision_ranges(upstream, onto, &head_hash,
diff --git a/sequencer.c b/sequencer.c
index 281a8ade19..ccc0160800 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -3418,10 +3418,11 @@ static const char *reflog_message(struct replay_opts *opts,
 	return buf.buf;
 }
 
-static int run_git_checkout(struct replay_opts *opts, const char *commit,
-			    const char *action)
+static int run_git_checkout(struct repository *r, struct replay_opts *opts,
+			    const char *commit, const char *action)
 {
 	struct child_process cmd = CHILD_PROCESS_INIT;
+	int ret;
 
 	cmd.git_cmd = 1;
 
@@ -3430,25 +3431,31 @@ static int run_git_checkout(struct replay_opts *opts, const char *commit,
 	argv_array_pushf(&cmd.env_array, GIT_REFLOG_ACTION "=%s", action);
 
 	if (opts->verbose)
-		return run_command(&cmd);
+		ret = run_command(&cmd);
 	else
-		return run_command_silent_on_success(&cmd);
+		ret = run_command_silent_on_success(&cmd);
+
+	if (!ret)
+		discard_index(r->index);
+
+	return ret;
 }
 
-int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit)
+int prepare_branch_to_be_rebased(struct repository *r, struct replay_opts *opts,
+				 const char *commit)
 {
 	const char *action;
 
 	if (commit && *commit) {
 		action = reflog_message(opts, "start", "checkout %s", commit);
-		if (run_git_checkout(opts, commit, action))
+		if (run_git_checkout(r, opts, commit, action))
 			return error(_("could not checkout %s"), commit);
 	}
 
 	return 0;
 }
 
-static int checkout_onto(struct replay_opts *opts,
+static int checkout_onto(struct repository *r, struct replay_opts *opts,
 			 const char *onto_name, const char *onto,
 			 const char *orig_head)
 {
@@ -3458,7 +3465,7 @@ static int checkout_onto(struct replay_opts *opts,
 	if (get_oid(orig_head, &oid))
 		return error(_("%s: not a valid OID"), orig_head);
 
-	if (run_git_checkout(opts, onto, action)) {
+	if (run_git_checkout(r, opts, onto, action)) {
 		apply_autostash(opts);
 		sequencer_remove_state(opts);
 		return error(_("could not detach HEAD"));
@@ -4786,7 +4793,7 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla
 	if (todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo) ||
 	    todo_list_check(todo_list, &new_todo)) {
 		fprintf(stderr, _(edit_todo_list_advice));
-		checkout_onto(opts, onto_name, onto, orig_head);
+		checkout_onto(r, opts, onto_name, onto, orig_head);
 		todo_list_release(&new_todo);
 
 		return -1;
@@ -4805,7 +4812,7 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla
 
 	todo_list_release(&new_todo);
 
-	if (checkout_onto(opts, onto_name, oid_to_hex(&oid), orig_head))
+	if (checkout_onto(r, opts, onto_name, oid_to_hex(&oid), orig_head))
 		return -1;
 
 	if (require_clean_work_tree(r, "rebase", "", 1, 1))
diff --git a/sequencer.h b/sequencer.h
index a515ee4457..6c55aa4200 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -175,7 +175,8 @@ void commit_post_rewrite(struct repository *r,
 			 const struct commit *current_head,
 			 const struct object_id *new_head);
 
-int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit);
+int prepare_branch_to_be_rebased(struct repository *r, struct replay_opts *opts,
+				 const char *commit);
 
 #define SUMMARY_INITIAL_COMMIT   (1 << 0)
 #define SUMMARY_SHOW_AUTHOR_DATE (1 << 1)
-- 
2.21.0


  reply index

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-19 19:03 [RFC PATCH 00/11] rebase -i run without forking rebase--interactive Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 01/11] sequencer: always discard index after checkout Phillip Wood
2019-03-20  1:50   ` Duy Nguyen
2019-03-21 14:35     ` Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 02/11] rebase: rename write_basic_state() Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 03/11] rebase: use OPT_RERERE_AUTOUPDATE() Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 04/11] rebase -i: combine rebase--interactive.c with rebase.c Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 05/11] rebase -i: remove duplication Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 06/11] rebase -i: use struct commit when parsing options Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 07/11] rebase -i: use struct object_id for squash_onto Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 08/11] rebase -i: use struct rebase_options to parse args Phillip Wood
2019-03-21  4:21   ` Junio C Hamano
2019-03-21 14:59     ` Phillip Wood
2019-03-22  3:34       ` Junio C Hamano
2019-03-21 21:13   ` Alban Gruin
2019-04-10 19:16     ` Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 09/11] rebase -i: use struct rebase_options in do_interactive_rebase() Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 10/11] rebase: use a common action enum Phillip Wood
2019-03-19 20:24   ` Ævar Arnfjörð Bjarmason
2019-03-21 14:43     ` Phillip Wood
2019-03-19 19:03 ` [RFC PATCH 11/11] rebase -i: run without forking rebase--interactive Phillip Wood
2019-03-20 20:50 ` [RFC PATCH 00/11] rebase -i " Josh Steadmon
2019-03-20 23:05 ` Ævar Arnfjörð Bjarmason
2019-03-21 14:40   ` Phillip Wood
2019-03-21  1:44 ` Junio C Hamano
2019-04-17 14:30 ` [PATCH v1 00/12] Run rebase -i " Phillip Wood
2019-04-17 14:30   ` Phillip Wood [this message]
2019-04-17 14:30   ` [PATCH v1 02/12] rebase: don't translate trace strings Phillip Wood
2019-04-19  5:53     ` Junio C Hamano
2019-04-17 14:30   ` [PATCH v1 03/12] rebase: rename write_basic_state() Phillip Wood
2019-04-17 14:30   ` [PATCH v1 04/12] rebase: use OPT_RERERE_AUTOUPDATE() Phillip Wood
2019-04-17 14:30   ` [PATCH v1 05/12] rebase -i: combine rebase--interactive.c with rebase.c Phillip Wood
2019-04-17 14:30   ` [PATCH v1 06/12] rebase -i: remove duplication Phillip Wood
2019-04-17 14:30   ` [PATCH v1 07/12] rebase -i: use struct commit when parsing options Phillip Wood
2019-04-17 14:30   ` [PATCH v1 08/12] rebase -i: use struct object_id for squash_onto Phillip Wood
2019-04-17 14:30   ` [PATCH v1 09/12] rebase -i: use struct rebase_options to parse args Phillip Wood
2019-04-17 14:30   ` [PATCH v1 10/12] rebase -i: use struct rebase_options in do_interactive_rebase() Phillip Wood
2019-04-17 14:30   ` [PATCH v1 11/12] rebase: use a common action enum Phillip Wood
2019-04-17 14:30   ` [PATCH v1 12/12] rebase -i: run without forking rebase--interactive Phillip Wood

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