[PATCH v2 11/11] rebase: dereference tags
From: Phillip Wood via GitGitGadget <hidden>
Date: 2021-09-13 15:45:51
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Phillip Wood <redacted>
Aborting a rebase stated with 'git rebase <upstream> <tag-object>'
should checkout the commit pointed to by <tag-object>. Instead it gives
error: update_ref failed for ref 'HEAD': cannot update ref 'HEAD':
trying to write non-commit object
710d743b2b9892457fdcc3970f397e6ec07447e0 to branch 'HEAD'
This is because when we parse the command line arguments although we
check that the tag points to a commit we remember the oid of the tag
and try and checkout that object rather than the commit it points
to. Fix this by using lookup_commit_reference_by_name() when parsing
the command line.
Signed-off-by: Phillip Wood <redacted>
---
---
builtin/rebase.c | 14 ++++++++------
t/t3407-rebase-abort.sh | 18 ++++++++++++++----
2 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 74663208468..2b70a196f9a 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c@@ -1903,13 +1903,15 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) die_if_checked_out(buf.buf, 1); options.head_name = xstrdup(buf.buf); /* If not is it a valid ref (branch or commit)? */ - } else if (!get_oid(branch_name, &options.orig_head) && - lookup_commit_reference(the_repository, - &options.orig_head)) + } else { + struct commit *commit = + lookup_commit_reference_by_name(branch_name); + if (!commit) + die(_("no such branch/commit '%s'"), + branch_name); + oidcpy(&options.orig_head, &commit->object.oid); options.head_name = NULL; - else - die(_("no such branch/commit '%s'"), - branch_name); + } } else if (argc == 0) { /* Do not need to switch branches, we are already on it. */ options.head_name =
diff --git a/t/t3407-rebase-abort.sh b/t/t3407-rebase-abort.sh
index 162112ba5ea..ebbaed147a6 100755
--- a/t/t3407-rebase-abort.sh
+++ b/t/t3407-rebase-abort.sh@@ -11,18 +11,18 @@ test_expect_success setup ' test_commit a a a && git branch to-rebase && - test_commit b a b && - test_commit c a c && + test_commit --annotate b a b && + test_commit --annotate c a c && git checkout to-rebase && test_commit "merge should fail on this" a d d && - test_commit "merge should fail on this, too" a e pre-rebase + test_commit --annotate "merge should fail on this, too" a e pre-rebase ' # Check that HEAD is equal to "pre-rebase" and the current branch is # "to-rebase" check_head() { - test_cmp_rev HEAD pre-rebase && + test_cmp_rev HEAD pre-rebase^{commit} && test "$(git symbolic-ref HEAD)" = refs/heads/to-rebase }
@@ -67,6 +67,16 @@ testrebase() { test_path_is_missing "$state_dir" ' + test_expect_success "rebase$type --abort when checking out a tag" ' + test_when_finished "git symbolic-ref HEAD refs/heads/to-rebase" && + git reset --hard a -- && + test_must_fail git rebase$type --onto b c pre-rebase && + test_cmp_rev HEAD b^{commit} && + git rebase --abort && + test_cmp_rev HEAD pre-rebase^{commit} && + ! git symbolic-ref HEAD + ' + test_expect_success "rebase$type --abort does not update reflog" ' # Clean up the state from the previous one git reset --hard pre-rebase &&
--
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