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Merge branch 'pb/pull-rebase-recurse-submodules'
"git pull --rebase --recurse-submodules" checked for local changes in a wrong range and failed to run correctly when it should. * pb/pull-rebase-recurse-submodules: pull: check for local submodule modifications with the right range t5572: describe '--rebase' tests a little more t5572: add notes on a peculiar test pull --rebase: compute rebase arguments in separate function
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c692e1b673
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@ -852,21 +852,42 @@ static int get_octopus_merge_base(struct object_id *merge_base,
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/**
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* Given the current HEAD oid, the merge head returned from git-fetch and the
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* fork point calculated by get_rebase_fork_point(), runs git-rebase with the
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* appropriate arguments and returns its exit status.
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* fork point calculated by get_rebase_fork_point(), compute the <newbase> and
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* <upstream> arguments to use for the upcoming git-rebase invocation.
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*/
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static int run_rebase(const struct object_id *curr_head,
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static int get_rebase_newbase_and_upstream(struct object_id *newbase,
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struct object_id *upstream,
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const struct object_id *curr_head,
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const struct object_id *merge_head,
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const struct object_id *fork_point)
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{
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int ret;
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struct object_id oct_merge_base;
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struct strvec args = STRVEC_INIT;
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if (!get_octopus_merge_base(&oct_merge_base, curr_head, merge_head, fork_point))
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if (!is_null_oid(fork_point) && oideq(&oct_merge_base, fork_point))
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fork_point = NULL;
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if (fork_point && !is_null_oid(fork_point))
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oidcpy(upstream, fork_point);
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else
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oidcpy(upstream, merge_head);
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oidcpy(newbase, merge_head);
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return 0;
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}
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/**
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* Given the <newbase> and <upstream> calculated by
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* get_rebase_newbase_and_upstream(), runs git-rebase with the
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* appropriate arguments and returns its exit status.
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*/
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static int run_rebase(const struct object_id *newbase,
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const struct object_id *upstream)
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{
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int ret;
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struct strvec args = STRVEC_INIT;
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strvec_push(&args, "rebase");
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/* Shared options */
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@ -894,12 +915,9 @@ static int run_rebase(const struct object_id *curr_head,
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warning(_("ignoring --verify-signatures for rebase"));
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strvec_push(&args, "--onto");
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strvec_push(&args, oid_to_hex(merge_head));
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strvec_push(&args, oid_to_hex(newbase));
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if (fork_point && !is_null_oid(fork_point))
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strvec_push(&args, oid_to_hex(fork_point));
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else
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strvec_push(&args, oid_to_hex(merge_head));
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strvec_push(&args, oid_to_hex(upstream));
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ret = run_command_v_opt(args.v, RUN_GIT_CMD);
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strvec_clear(&args);
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@ -1011,9 +1029,15 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
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if (opt_rebase) {
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int ret = 0;
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int ran_ff = 0;
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struct object_id newbase;
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struct object_id upstream;
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get_rebase_newbase_and_upstream(&newbase, &upstream, &curr_head,
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merge_heads.oid, &rebase_fork_point);
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if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
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recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
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submodule_touches_in_range(the_repository, &rebase_fork_point, &curr_head))
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submodule_touches_in_range(the_repository, &upstream, &curr_head))
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die(_("cannot rebase with locally recorded submodule modifications"));
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if (!autostash) {
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struct commit_list *list = NULL;
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@ -1034,7 +1058,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
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free_commit_list(list);
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}
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if (!ran_ff)
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ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
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ret = run_rebase(&newbase, &upstream);
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if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
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recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
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@ -101,7 +101,12 @@ test_expect_success " --[no-]recurse-submodule and submodule.recurse" '
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test_path_is_file super/sub/merge_strategy_4.t
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'
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test_expect_success 'recursive rebasing pull' '
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test_expect_success 'pull --rebase --recurse-submodules (remote superproject submodule changes, local submodule changes)' '
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# This tests the following scenario :
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# - local submodule has new commits
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# - local superproject does not have new commits
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# - upstream superproject has new commits that change the submodule pointer
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# change upstream
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test_commit -C child rebase_strategy &&
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git -C parent submodule update --remote &&
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@ -116,7 +121,10 @@ test_expect_success 'recursive rebasing pull' '
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test_path_is_file super/sub/local_stuff.t
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'
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test_expect_success 'pull rebase recursing fails with conflicts' '
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test_expect_success 'pull --rebase --recurse-submodules fails if both sides record submodule changes' '
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# This tests the following scenario :
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# - local superproject has new commits that change the submodule pointer
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# - upstream superproject has new commits that change the submodule pointer
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# local changes in submodule recorded in superproject:
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test_commit -C super/sub local_stuff_2 &&
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@ -136,6 +144,50 @@ test_expect_success 'pull rebase recursing fails with conflicts' '
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test_i18ngrep "locally recorded submodule modifications" err
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'
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test_expect_success 'pull --rebase --recurse-submodules (no submodule changes, no fork-point)' '
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# This tests the following scenario :
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# - local submodule does not have new commits
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# - local superproject has new commits that *do not* change the submodule pointer
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# - upstream superproject has new commits that *do not* change the submodule pointer
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# - local superproject branch has no fork-point with its remote-tracking counter-part
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# create upstream superproject
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test_create_repo submodule &&
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test_commit -C submodule first_in_sub &&
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test_create_repo superprojet &&
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test_commit -C superprojet first_in_super &&
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git -C superprojet submodule add ../submodule &&
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git -C superprojet commit -m "add submodule" &&
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test_commit -C superprojet third_in_super &&
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# clone superproject
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git clone --recurse-submodules superprojet superclone &&
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# add commits upstream
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test_commit -C superprojet fourth_in_super &&
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# create topic branch in clone, not based on any remote-tracking branch
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git -C superclone checkout -b feat HEAD~1 &&
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test_commit -C superclone first_on_feat &&
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git -C superclone pull --rebase --recurse-submodules origin master
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'
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# NOTE:
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#
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# This test is particular because there is only a single commit in the upstream superproject
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# 'parent' (which adds the submodule 'a-submodule'). The clone of the superproject
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# ('child') hard-resets its branch to a new root commit with the same tree as the one
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# from the upstream superproject, so that its branch has no merge-base with its
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# remote-tracking counterpart, and then calls 'git pull --recurse-submodules --rebase'.
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# The result is that the local branch is reset to the remote-tracking branch (as it was
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# originally before the hard-reset).
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# The only commit in the range generated by 'submodule.c::submodule_touches_in_range' and
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# passed to 'submodule.c::collect_changed_submodules' is the new (regenerated) initial commit,
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# which adds the submodule.
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# However, 'submodule_touches_in_range' does not error (even though this commit adds the submodule)
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# because 'combine-diff.c::diff_tree_combined' returns early, as the initial commit has no parents.
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test_expect_success 'branch has no merge base with remote-tracking counterpart' '
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rm -rf parent child &&
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