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| author | Nguyễn Thái Ngọc Duy <pclouds@gmail.com> | 2016-07-16 07:06:27 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2016-07-18 13:45:33 -0700 |
| commit | 6d6a782fbf83927212f348f91823d886c5cd6d85 (patch) | |
| tree | f78051522c92b67cd414291fb6436c3d7893c676 | |
| parent | c041d54a741e516b5a743f4d27532e484f2a05d3 (diff) | |
| download | git-nd/cache-tree-ita.tar.gz | |
cache-tree: do not generate empty trees as a result of all i-t-a subentriesnd/cache-tree-ita
If a subdirectory contains nothing but i-t-a entries, we generate an
empty tree object and add it to its parent tree. Which is wrong. Such
a subdirectory should not be added.
Note that this has a cascading effect. If subdir 'a/b/c' contains
nothing but i-t-a entries, we ignore it. But then if 'a/b' contains
only (the non-existing) 'a/b/c', then we should ignore 'a/b' while
building 'a' too. And it goes all the way up to top directory.
Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | cache-tree.c | 10 | ||||
| -rwxr-xr-x | t/t2203-add-intent.sh | 14 |
2 files changed, 23 insertions, 1 deletions
diff --git a/cache-tree.c b/cache-tree.c index c2676e8a31..f28b1f45a4 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -325,6 +325,7 @@ static int update_one(struct cache_tree *it, const unsigned char *sha1; unsigned mode; int expected_missing = 0; + int contains_ita = 0; path = ce->name; pathlen = ce_namelen(ce); @@ -341,7 +342,8 @@ static int update_one(struct cache_tree *it, i += sub->count; sha1 = sub->cache_tree->sha1; mode = S_IFDIR; - if (sub->cache_tree->entry_count < 0) { + contains_ita = sub->cache_tree->entry_count < 0; + if (contains_ita) { to_invalidate = 1; expected_missing = 1; } @@ -380,6 +382,12 @@ static int update_one(struct cache_tree *it, continue; } + /* + * "sub" can be an empty tree if all subentries are i-t-a. + */ + if (contains_ita && !hashcmp(sha1, EMPTY_TREE_SHA1_BIN)) + continue; + strbuf_grow(&buffer, entlen + 100); strbuf_addf(&buffer, "%o %.*s%c", mode, entlen, path + baselen, '\0'); strbuf_add(&buffer, sha1, 20); diff --git a/t/t2203-add-intent.sh b/t/t2203-add-intent.sh index 24aed2e541..8f22c43e24 100755 --- a/t/t2203-add-intent.sh +++ b/t/t2203-add-intent.sh @@ -99,5 +99,19 @@ test_expect_success 'cache-tree does not ignore dir that has i-t-a entries' ' ) ' +test_expect_success 'cache-tree does skip dir that becomes empty' ' + rm -fr ita-in-dir && + git init ita-in-dir && + ( + cd ita-in-dir && + mkdir -p 1/2/3 && + echo 4 >1/2/3/4 && + git add -N 1/2/3/4 && + git write-tree >actual && + echo $EMPTY_TREE >expected && + test_cmp expected actual + ) +' + test_done |