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| author | Jonathan Tan <jonathantanmy@google.com> | 2018-05-24 23:47:29 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2018-05-25 09:25:42 +0300 |
| commit | 4d36f88be7401fb4ff225557aae05a458091b24b (patch) | |
| tree | e5f6ac6d2d65b07a78653fb9f0bcb12974f3940d | |
| parent | 468165c1d8a442994a825f3684528361727cd8c0 (diff) | |
submodule: do not pass null OID to setup_revisions
If "git pull --recurse-submodules --rebase" is invoked when the current
branch and its corresponding remote-tracking branch have no merge base,
a "bad object" fatal error occurs. This issue was introduced with commit
a6d7eb2c7a ("pull: optionally rebase submodules (remote submodule
changes only)", 2017-06-23), which also introduced this feature.
This is because cmd_pull() in builtin/pull.c thus invokes
submodule_touches_in_range() with a null OID as the first parameter.
Ensure that this case works, and document what happens in this case.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | submodule.c | 6 | ||||
| -rw-r--r-- | submodule.h | 5 | ||||
| -rwxr-xr-x | t/t5572-pull-submodule.sh | 21 |
3 files changed, 29 insertions, 3 deletions
diff --git a/submodule.c b/submodule.c index 12a2503fda..db8bd4a079 100644 --- a/submodule.c +++ b/submodule.c @@ -1166,8 +1166,10 @@ int submodule_touches_in_range(struct object_id *excl_oid, argv_array_push(&args, "--"); /* args[0] program name */ argv_array_push(&args, oid_to_hex(incl_oid)); - argv_array_push(&args, "--not"); - argv_array_push(&args, oid_to_hex(excl_oid)); + if (!is_null_oid(excl_oid)) { + argv_array_push(&args, "--not"); + argv_array_push(&args, oid_to_hex(excl_oid)); + } collect_changed_submodules(&subs, &args); ret = subs.nr; diff --git a/submodule.h b/submodule.h index 9589f13127..0189b3ebde 100644 --- a/submodule.h +++ b/submodule.h @@ -94,7 +94,10 @@ extern int merge_submodule(struct object_id *result, const char *path, const struct object_id *a, const struct object_id *b, int search); -/* Checks if there are submodule changes in a..b. */ +/* + * Checks if there are submodule changes in a..b. If a is the null OID, + * checks b and all its ancestors instead. + */ extern int submodule_touches_in_range(struct object_id *a, struct object_id *b); extern int find_unpushed_submodules(struct oid_array *commits, diff --git a/t/t5572-pull-submodule.sh b/t/t5572-pull-submodule.sh index 321bd37deb..f916729a12 100755 --- a/t/t5572-pull-submodule.sh +++ b/t/t5572-pull-submodule.sh @@ -132,4 +132,25 @@ test_expect_success 'pull rebase recursing fails with conflicts' ' test_i18ngrep "locally recorded submodule modifications" err ' +test_expect_success 'branch has no merge base with remote-tracking counterpart' ' + rm -rf parent child && + + test_create_repo a-submodule && + test_commit -C a-submodule foo && + + test_create_repo parent && + git -C parent submodule add "$(pwd)/a-submodule" && + git -C parent commit -m foo && + + git clone parent child && + + # Reset master so that it has no merge base with + # refs/remotes/origin/master. + OTHER=$(git -C child commit-tree -m bar \ + $(git -C child rev-parse HEAD^{tree})) && + git -C child reset --hard "$OTHER" && + + git -C child pull --recurse-submodules --rebase +' + test_done |