git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH v1 01/12] sequencer: always discard index after checkout

From
PWPhillip Wood <phillip.wood123@gmail.com>
Date
Apr 17, 2019, 14:30 UTC
Message-ID
<20190417143044.17655-2-phillip.wood123@gmail.com>
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As the checkout runs in a separate process our index will be out of date so it should be discarded.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
Previous: Phillip WoodNext: Phillip Wood
Message 27 of 40 in “rebase -i run without forking rebase--interactive”
  1. 00/11 rebase -i run without forking rebase--interactivePhillip Wood, Mar 19, 2019
  2. 02/11 rebase: rename write_basic_state()Phillip Wood, Mar 19, 2019
  3. 01/11 sequencer: always discard index after checkoutPhillip Wood, Mar 19, 2019
  4. Duy NguyenMar 20, 2019
  5. Phillip WoodMar 21, 2019
  6. 03/11 rebase: use OPT_RERERE_AUTOUPDATE()Phillip Wood, Mar 19, 2019
  7. 05/11 rebase -i: remove duplicationPhillip Wood, Mar 19, 2019
  8. 06/11 rebase -i: use struct commit when parsing optionsPhillip Wood, Mar 19, 2019
  9. 04/11 rebase -i: combine rebase--interactive.c with rebase.cPhillip Wood, Mar 19, 2019
  10. 07/11 rebase -i: use struct object_id for squash_ontoPhillip Wood, Mar 19, 2019
  11. 08/11 rebase -i: use struct rebase_options to parse argsPhillip Wood, Mar 19, 2019
  12. Junio C HamanoMar 21, 2019
  13. Phillip WoodMar 21, 2019
  14. Junio C HamanoMar 22, 2019
  15. Alban GruinMar 21, 2019
  16. Phillip WoodApr 10, 2019
  17. 10/11 rebase: use a common action enumPhillip Wood, Mar 19, 2019
  18. Ævar Arnfjörð BjarmasonMar 19, 2019
  19. Phillip WoodMar 21, 2019
  20. 09/11 rebase -i: use struct rebase_options in do_interactive_rebase()Phillip Wood, Mar 19, 2019
  21. 11/11 rebase -i: run without forking rebase--interactivePhillip Wood, Mar 19, 2019
  22. Josh SteadmonMar 20, 2019
  23. Ævar Arnfjörð BjarmasonMar 20, 2019
  24. Phillip WoodMar 21, 2019
  25. Junio C HamanoMar 21, 2019
  26. 00/12 Run rebase -i without forking rebase--interactivePhillip Wood, Apr 17, 2019
  27. 01/12 sequencer: always discard index after checkoutPhillip Wood, Apr 17, 2019
  28. 03/12 rebase: rename write_basic_state()Phillip Wood, Apr 17, 2019
  29. 04/12 rebase: use OPT_RERERE_AUTOUPDATE()Phillip Wood, Apr 17, 2019
  30. 02/12 rebase: don't translate trace stringsPhillip Wood, Apr 17, 2019
  31. Junio C HamanoApr 19, 2019
  32. Phillip WoodApr 25, 2019
  33. 05/12 rebase -i: combine rebase--interactive.c with rebase.cPhillip Wood, Apr 17, 2019
  34. 06/12 rebase -i: remove duplicationPhillip Wood, Apr 17, 2019
  35. 08/12 rebase -i: use struct object_id for squash_ontoPhillip Wood, Apr 17, 2019
  36. 07/12 rebase -i: use struct commit when parsing optionsPhillip Wood, Apr 17, 2019
  37. 09/12 rebase -i: use struct rebase_options to parse argsPhillip Wood, Apr 17, 2019
  38. 10/12 rebase -i: use struct rebase_options in do_interactive_rebase()Phillip Wood, Apr 17, 2019
  39. 12/12 rebase -i: run without forking rebase--interactivePhillip Wood, Apr 17, 2019
  40. 11/12 rebase: use a common action enumPhillip Wood, Apr 17, 2019

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.