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Merge branch 'en/merge-dir-rename-corner-case-fix'
The merge code had funny interactions between content based rename detection and directory rename detection. * en/merge-dir-rename-corner-case-fix: merge-recursive: handle rename-to-self case merge-ort: ensure we consult df_conflict and path_conflicts t6423: test directory renames causing rename-to-self
This commit is contained in:
Junio C Hamano
commit
d3b88be1b4
@ -3270,7 +3270,7 @@ static void process_entry(struct merge_options *opt,
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* above.
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*/
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if (ci->match_mask) {
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ci->merged.clean = 1;
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ci->merged.clean = !ci->df_conflict && !ci->path_conflict;
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if (ci->match_mask == 6) {
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/* stages[1] == stages[2] */
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ci->merged.result.mode = ci->stages[1].mode;
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@ -3282,6 +3282,8 @@ static void process_entry(struct merge_options *opt,
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ci->merged.result.mode = ci->stages[side].mode;
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ci->merged.is_null = !ci->merged.result.mode;
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if (ci->merged.is_null)
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ci->merged.clean = 1;
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oidcpy(&ci->merged.result.oid, &ci->stages[side].oid);
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assert(othermask == 2 || othermask == 4);
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@ -3454,6 +3456,7 @@ static void process_entry(struct merge_options *opt,
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path)) {
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ci->merged.is_null = 1;
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ci->merged.clean = 1;
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assert(!ci->df_conflict && !ci->path_conflict);
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} else if (ci->path_conflict &&
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oideq(&ci->stages[0].oid, &ci->stages[side].oid)) {
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/*
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@ -3480,6 +3483,7 @@ static void process_entry(struct merge_options *opt,
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ci->merged.is_null = 1;
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ci->merged.result.mode = 0;
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oidcpy(&ci->merged.result.oid, null_oid());
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assert(!ci->df_conflict);
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ci->merged.clean = !ci->path_conflict;
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}
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@ -2804,12 +2804,19 @@ static int process_renames(struct merge_options *opt,
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int renamed_stage = a_renames == renames1 ? 2 : 3;
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int other_stage = a_renames == renames1 ? 3 : 2;
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/*
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* Directory renames have a funny corner case...
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*/
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int renamed_to_self = !strcmp(ren1_src, ren1_dst);
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/* BUG: We should only remove ren1_src in the base
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* stage and in other_stage (think of rename +
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* add-source case).
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*/
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remove_file(opt, 1, ren1_src,
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renamed_stage == 2 || !was_tracked(opt, ren1_src));
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if (!renamed_to_self)
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remove_file(opt, 1, ren1_src,
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renamed_stage == 2 ||
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!was_tracked(opt, ren1_src));
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oidcpy(&src_other.oid,
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&ren1->src_entry->stages[other_stage].oid);
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@ -2823,6 +2830,9 @@ static int process_renames(struct merge_options *opt,
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ren1->dir_rename_original_type == 'A') {
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setup_rename_conflict_info(RENAME_VIA_DIR,
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opt, ren1, NULL);
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} else if (renamed_to_self) {
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setup_rename_conflict_info(RENAME_NORMAL,
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opt, ren1, NULL);
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} else if (oideq(&src_other.oid, null_oid())) {
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setup_rename_conflict_info(RENAME_DELETE,
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opt, ren1, NULL);
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@ -3180,7 +3190,6 @@ static int handle_rename_normal(struct merge_options *opt,
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struct rename *ren = ci->ren1;
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struct merge_file_info mfi;
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int clean;
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int side = (ren->branch == opt->branch1 ? 2 : 3);
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/* Merge the content and write it out */
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clean = handle_content_merge(&mfi, opt, path, was_dirty(opt, path),
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@ -3190,9 +3199,7 @@ static int handle_rename_normal(struct merge_options *opt,
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opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_CONFLICT &&
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ren->dir_rename_original_dest) {
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if (update_stages(opt, path,
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NULL,
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side == 2 ? &mfi.blob : NULL,
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side == 2 ? NULL : &mfi.blob))
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&mfi.blob, &mfi.blob, &mfi.blob))
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return -1;
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clean = 0; /* not clean, but conflicted */
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}
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@ -5024,6 +5024,181 @@ test_expect_failure '12h: renaming a file within a renamed directory' '
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)
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'
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# Testcase 12i, Directory rename causes rename-to-self
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# Commit O: source/{subdir/foo, bar, baz_1}
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# Commit A: source/{foo, bar, baz_1}
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# Commit B: source/{subdir/{foo, bar}, baz_2}
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# Expected: source/{foo, bar, baz_2}, with conflicts on
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# source/bar vs. source/subdir/bar
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test_setup_12i () {
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test_create_repo 12i &&
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(
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cd 12i &&
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mkdir -p source/subdir &&
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echo foo >source/subdir/foo &&
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echo bar >source/bar &&
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echo baz >source/baz &&
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git add source &&
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git commit -m orig &&
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git branch O &&
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git branch A &&
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git branch B &&
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git switch A &&
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git mv source/subdir/foo source/foo &&
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git commit -m A &&
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git switch B &&
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git mv source/bar source/subdir/bar &&
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echo more baz >>source/baz &&
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git commit -m B
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)
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}
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test_expect_success '12i: Directory rename causes rename-to-self' '
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test_setup_12i &&
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(
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cd 12i &&
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git checkout A^0 &&
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test_must_fail git -c merge.directoryRenames=conflict merge -s recursive B^0 &&
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test_path_is_missing source/subdir &&
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test_path_is_file source/bar &&
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test_path_is_file source/baz &&
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git ls-files | uniq >tracked &&
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test_line_count = 3 tracked &&
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git status --porcelain -uno >actual &&
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cat >expect <<-\EOF &&
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UU source/bar
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M source/baz
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EOF
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test_cmp expect actual
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)
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'
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# Testcase 12j, Directory rename to root causes rename-to-self
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# Commit O: {subdir/foo, bar, baz_1}
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# Commit A: {foo, bar, baz_1}
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# Commit B: {subdir/{foo, bar}, baz_2}
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# Expected: {foo, bar, baz_2}, with conflicts on bar vs. subdir/bar
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test_setup_12j () {
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test_create_repo 12j &&
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(
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cd 12j &&
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mkdir -p subdir &&
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echo foo >subdir/foo &&
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echo bar >bar &&
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echo baz >baz &&
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git add . &&
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git commit -m orig &&
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git branch O &&
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git branch A &&
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git branch B &&
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git switch A &&
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git mv subdir/foo foo &&
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git commit -m A &&
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git switch B &&
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git mv bar subdir/bar &&
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echo more baz >>baz &&
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git commit -m B
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)
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}
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test_expect_success '12j: Directory rename to root causes rename-to-self' '
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test_setup_12j &&
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(
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cd 12j &&
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git checkout A^0 &&
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test_must_fail git -c merge.directoryRenames=conflict merge -s recursive B^0 &&
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test_path_is_missing subdir &&
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test_path_is_file bar &&
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test_path_is_file baz &&
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git ls-files | uniq >tracked &&
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test_line_count = 3 tracked &&
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git status --porcelain -uno >actual &&
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cat >expect <<-\EOF &&
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UU bar
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M baz
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EOF
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test_cmp expect actual
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)
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'
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# Testcase 12k, Directory rename with sibling causes rename-to-self
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# Commit O: dirB/foo, dirA/{bar, baz_1}
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# Commit A: dirA/{foo, bar, baz_1}
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# Commit B: dirB/{foo, bar}, dirA/baz_2
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# Expected: dirA/{foo, bar, baz_2}, with conflicts on dirA/bar vs. dirB/bar
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test_setup_12k () {
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test_create_repo 12k &&
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(
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cd 12k &&
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mkdir dirA dirB &&
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echo foo >dirB/foo &&
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echo bar >dirA/bar &&
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echo baz >dirA/baz &&
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git add . &&
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git commit -m orig &&
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git branch O &&
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git branch A &&
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git branch B &&
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git switch A &&
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git mv dirB/* dirA/ &&
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git commit -m A &&
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git switch B &&
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git mv dirA/bar dirB/bar &&
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echo more baz >>dirA/baz &&
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git commit -m B
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)
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}
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test_expect_success '12k: Directory rename with sibling causes rename-to-self' '
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test_setup_12k &&
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(
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cd 12k &&
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git checkout A^0 &&
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test_must_fail git -c merge.directoryRenames=conflict merge -s recursive B^0 &&
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test_path_is_missing dirB &&
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test_path_is_file dirA/bar &&
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test_path_is_file dirA/baz &&
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git ls-files | uniq >tracked &&
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test_line_count = 3 tracked &&
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git status --porcelain -uno >actual &&
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cat >expect <<-\EOF &&
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UU dirA/bar
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M dirA/baz
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EOF
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test_cmp expect actual
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)
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'
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###########################################################################
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# SECTION 13: Checking informational and conflict messages
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#
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