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From: Elijah Newren <newren@gmail.com>
To: git@vger.kernel.org
Cc: sxlijin@gmail.com, peff@peff.net, Elijah Newren <newren@gmail.com>
Subject: [RFC PATCH 2/7] dir.c: fix off-by-one error in match_pathspec_item
Date: Thu,  5 Apr 2018 10:34:41 -0700	[thread overview]
Message-ID: <20180405173446.32372-3-newren@gmail.com> (raw)
In-Reply-To: <20180405173446.32372-1-newren@gmail.com>

For a pathspec like 'foo/bar' comparing against a path named "foo/",
namelen will be 4, and match[namelen] will be 'b'.  The correct location
of the directory separator is namelen-1.

The reason the code worked anyway was that the following code immediately
checked whether the first matchlen characters matched (which they do) and
then bailed and return MATCHED_RECURSIVELY anyway since wildmatch doesn't
have the ability to check if "name" can be matched as a directory (or
prefix) against the pathspec.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 dir.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dir.c b/dir.c
index 19212129f0..c915a69385 100644
--- a/dir.c
+++ b/dir.c
@@ -384,7 +384,7 @@ static int match_pathspec_item(const struct pathspec_item *item, int prefix,
 	if (flags & DO_MATCH_SUBMODULE) {
 		/* name is a literal prefix of the pathspec */
 		if ((namelen < matchlen) &&
-		    (match[namelen] == '/') &&
+		    (match[namelen-1] == '/') &&
 		    !ps_strncmp(item, match, name, namelen))
 			return MATCHED_RECURSIVELY;
 
-- 
2.17.0.7.g0b50f94d69


  parent reply	other threads:[~2018-04-05 17:35 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-05 17:34 [RFC PATCH 0/7] Fix `git clean` with pathspecs Elijah Newren
2018-04-05 17:34 ` [RFC PATCH 1/7] dir.c: Fix typo in comment Elijah Newren
2018-04-05 17:34 ` Elijah Newren [this message]
2018-04-05 17:49   ` [RFC PATCH 2/7] dir.c: fix off-by-one error in match_pathspec_item Jeff King
2018-04-05 18:36     ` Elijah Newren
2018-04-05 19:04       ` Jeff King
2018-04-05 20:06         ` Elijah Newren
2018-04-06 17:53           ` Jeff King
2018-04-05 17:34 ` [RFC PATCH 3/7] t7300: Add some testcases showing failure to clean specified pathspecs Elijah Newren
2018-04-05 17:34 ` [RFC PATCH 4/7] dir: Directories should be checked for matching pathspecs too Elijah Newren
2018-04-05 18:58   ` Jeff King
2018-04-05 19:15     ` Elijah Newren
2018-04-05 19:31       ` Jeff King
2018-04-09  2:07         ` Junio C Hamano
2018-04-05 17:34 ` [RFC PATCH 5/7] dir: Make the DO_MATCH_SUBMODULE code reusable for a non-submodule case Elijah Newren
2018-04-05 17:34 ` [RFC PATCH 6/7] dir: If our pathspec might match files under a dir, recurse into it Elijah Newren
2018-04-05 17:34 ` [RFC PATCH 7/7] If we do not want globs to recurse into subdirs without -d Elijah Newren

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