unpack-trees: do not fail reset because of unmerged skipped entry

After modify/delete merge conflict happens in a file skipped by sparse checkout, "git reset --merge", which implements the "--abort" actions, and "git reset --hard" fail with message "Entry * not uptodate. Cannot update sparse checkout." As explained in [1], the up-to-date checker mistakenly treats conflicted entry which does not exist in HEAD as still skipped by sparse checkout. Use the fix suggested in [1]. Also, add test case which verifies the issue is fixed. [1] https://public-inbox.org/git/20180616051444.GA29754@duynguyen.home/ Signed-off-by: Duy Nguyen <pclouds@gmail.com> Signed-off-by: Max Kirillov <max@max630.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Max Kirillov committed Jul 10, 2018 at 22:17 UTC b33fdfc34cda95f92cc7a50e5c81b87f8ee65eef
2 files changed +60 -1
t/t3035-merge-sparse.sh new
+59
@@ -0,0 +1,59 @@
1 +#!/bin/sh
2 +
3 +test_description='merge with sparse files'
4 +
5 +. ./test-lib.sh
6 +
7 +# test_file $filename $content
8 +test_file () {
9 + echo "$2" > "$1" &&
10 + git add "$1"
11 +}
12 +
13 +# test_commit_this $message_and_tag
14 +test_commit_this () {
15 + git commit -m "$1" &&
16 + git tag "$1"
17 +}
18 +
19 +test_expect_success 'setup' '
20 + : >empty &&
21 + test_file checked-out init &&
22 + test_file modify_delete modify_delete_init &&
23 + test_commit_this init &&
24 + test_file modify_delete modify_delete_theirs &&
25 + test_commit_this theirs &&
26 + git reset --hard init &&
27 + git rm modify_delete &&
28 + test_commit_this ours &&
29 + git config core.sparseCheckout true &&
30 + echo "/checked-out" >.git/info/sparse-checkout &&
31 + git reset --hard &&
32 + ! git merge theirs
33 +'
34 +
35 +test_expect_success 'reset --hard works after the conflict' '
36 + git reset --hard
37 +'
38 +
39 +test_expect_success 'is reset properly' '
40 + git status --porcelain -- modify_delete >out &&
41 + test_cmp empty out &&
42 + test_path_is_missing modify_delete
43 +'
44 +
45 +test_expect_success 'setup: conflict back' '
46 + ! git merge theirs
47 +'
48 +
49 +test_expect_success 'Merge abort works after the conflict' '
50 + git merge --abort
51 +'
52 +
53 +test_expect_success 'is aborted properly' '
54 + git status --porcelain -- modify_delete >out &&
55 + test_cmp empty out &&
56 + test_path_is_missing modify_delete
57 +'
58 +
59 +test_done
unpack-trees.c
+1 -1
@@ -1246,7 +1246,7 @@ static void mark_new_skip_worktree(struct exclude_list *el,
1246 if (select_flag && !(ce->ce_flags & select_flag))
1247 continue;
1248
1249 - if (!ce_stage(ce))
1249 + if (!ce_stage(ce) && !(ce->ce_flags & CE_CONFLICTED))
1250 ce->ce_flags |= skip_wt_flag;
1251 else
1252 ce->ce_flags &= ~skip_wt_flag;