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authorJunio C Hamano <gitster@pobox.com>2020-02-14 20:54:20 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-14 20:54:20 (GMT)
commit251187084d5ebdb3ba898ba4a8f9b005b7626655 (patch)
treeea556c7380d8b45c04e92a2e3d6c07ed98700e22
parentc9a33e5e5d7e124feb86ccff08ea466faff53b26 (diff)
parent26027625dd1ee358e2174a09d519252995d51662 (diff)
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Merge branch 'js/rebase-i-with-colliding-hash'
"git rebase -i" identifies existing commits in its todo file with their abbreviated object name, which could become ambigous as it goes to create new commits, and has a mechanism to avoid ambiguity in the main part of its execution. A few other cases however were not covered by the protection against ambiguity, which has been corrected. * js/rebase-i-with-colliding-hash: rebase -i: also avoid SHA-1 collisions with missingCommitsCheck rebase -i: re-fix short SHA-1 collision parse_insn_line(): improve error message when parsing failed
-rw-r--r--rebase-interactive.c8
-rw-r--r--sequencer.c18
-rwxr-xr-xt/t3404-rebase-interactive.sh17
3 files changed, 34 insertions, 9 deletions
diff --git a/rebase-interactive.c b/rebase-interactive.c
index aa18ae8..1259adc 100644
--- a/rebase-interactive.c
+++ b/rebase-interactive.c
@@ -104,9 +104,11 @@ int edit_todo_list(struct repository *r, struct todo_list *todo_list,
-1, flags | TODO_LIST_SHORTEN_IDS | TODO_LIST_APPEND_TODO_HELP))
return error_errno(_("could not write '%s'"), todo_file);
- if (initial && copy_file(rebase_path_todo_backup(), todo_file, 0666))
- return error(_("could not copy '%s' to '%s'."), todo_file,
- rebase_path_todo_backup());
+ if (initial &&
+ todo_list_write_to_file(r, todo_list, rebase_path_todo_backup(),
+ shortrevisions, shortonto, -1,
+ (flags | TODO_LIST_APPEND_TODO_HELP) & ~TODO_LIST_SHORTEN_IDS) < 0)
+ return error(_("could not write '%s'."), rebase_path_todo_backup());
if (launch_sequence_editor(todo_file, &new_todo->buf, NULL))
return -2;
diff --git a/sequencer.c b/sequencer.c
index 4d31ec3..df6d18f 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -2118,6 +2118,8 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
saved = *end_of_object_name;
*end_of_object_name = '\0';
status = get_oid(bol, &commit_oid);
+ if (status < 0)
+ error(_("could not parse '%s'"), bol); /* return later */
*end_of_object_name = saved;
bol = end_of_object_name + strspn(end_of_object_name, " \t");
@@ -2125,11 +2127,10 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
item->arg_len = (int)(eol - bol);
if (status < 0)
- return error(_("could not parse '%.*s'"),
- (int)(end_of_object_name - bol), bol);
+ return status;
item->commit = lookup_commit_reference(r, &commit_oid);
- return !item->commit;
+ return item->commit ? 0 : -1;
}
int sequencer_get_last_command(struct repository *r, enum replay_action *action)
@@ -5075,7 +5076,7 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla
{
const char *shortonto, *todo_file = rebase_path_todo();
struct todo_list new_todo = TODO_LIST_INIT;
- struct strbuf *buf = &todo_list->buf;
+ struct strbuf *buf = &todo_list->buf, buf2 = STRBUF_INIT;
struct object_id oid = onto->object.oid;
int res;
@@ -5127,6 +5128,15 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla
return -1;
}
+ /* Expand the commit IDs */
+ todo_list_to_strbuf(r, &new_todo, &buf2, -1, 0);
+ strbuf_swap(&new_todo.buf, &buf2);
+ strbuf_release(&buf2);
+ new_todo.total_nr -= new_todo.nr;
+ if (todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo) < 0)
+ BUG("invalid todo list after expanding IDs:\n%s",
+ new_todo.buf.buf);
+
if (opts->allow_ff && skip_unnecessary_picks(r, &new_todo, &oid)) {
todo_list_release(&new_todo);
return error(_("could not skip unnecessary pick commands"));
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index ae6e55c..b90ea0f 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -1264,13 +1264,26 @@ test_expect_success SHA1 'short SHA-1 setup' '
test_expect_success SHA1 'short SHA-1 collide' '
test_when_finished "reset_rebase && git checkout master" &&
git checkout collide &&
+ colliding_sha1=6bcda37 &&
+ test $colliding_sha1 = "$(git rev-parse HEAD | cut -c 1-7)" &&
(
unset test_tick &&
test_tick &&
set_fake_editor &&
FAKE_COMMIT_MESSAGE="collide2 ac4f2ee" \
- FAKE_LINES="reword 1 2" git rebase -i HEAD~2
- )
+ FAKE_LINES="reword 1 break 2" git rebase -i HEAD~2 &&
+ test $colliding_sha1 = "$(git rev-parse HEAD | cut -c 1-7)" &&
+ grep "^pick $colliding_sha1 " \
+ .git/rebase-merge/git-rebase-todo.tmp &&
+ grep "^pick [0-9a-f]\{40\}" \
+ .git/rebase-merge/git-rebase-todo &&
+ grep "^pick [0-9a-f]\{40\}" \
+ .git/rebase-merge/git-rebase-todo.backup &&
+ git rebase --continue
+ ) &&
+ collide2="$(git rev-parse HEAD~1 | cut -c 1-4)" &&
+ collide3="$(git rev-parse collide3 | cut -c 1-4)" &&
+ test "$collide2" = "$collide3"
'
test_expect_success 'respect core.abbrev' '