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authorJunio C Hamano <gitster@pobox.com>2008-03-13 22:07:18 -0700
committerJunio C Hamano <gitster@pobox.com>2008-03-13 23:56:36 -0700
commitca885a4fe6444bed840295378848904106c87c85 (patch)
tree77b671ab9b278745ef39f0286b155db871864afe /unpack-trees.c
parentf746bae84e4746a861d9ebed29fd9255e5cd929f (diff)
downloadgit-ca885a4fe6444bed840295378848904106c87c85.tar.gz
git-ca885a4fe6444bed840295378848904106c87c85.tar.xz
read-tree() and unpack_trees(): use consistent limit
read-tree -m can read up to MAX_TREES, which was arbitrarily set to 8 since August 2007 (4 is needed to deal with 2 merge-base case). However, the updated unpack_trees() code had an advertised limit of 4 (which it enforced). In reality the code was prepared to take only 3 trees and giving 4 caused it to stomp on its stack. Rename the MAX_TREES constant to MAX_UNPACK_TREES, move it to the unpack-trees.h common header file, and use it from both places to avoid future confusion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'unpack-trees.c')
-rw-r--r--unpack-trees.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/unpack-trees.c b/unpack-trees.c
index be89d52e8..91649f31d 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -123,7 +123,7 @@ static int unpack_index_entry(struct cache_entry *ce, struct unpack_trees_option
int traverse_trees_recursive(int n, unsigned long dirmask, unsigned long df_conflicts, struct name_entry *names, struct traverse_info *info)
{
int i;
- struct tree_desc t[3];
+ struct tree_desc t[MAX_UNPACK_TREES];
struct traverse_info newinfo;
struct name_entry *p;
@@ -327,8 +327,8 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
{
static struct cache_entry *dfc;
- if (len > 4)
- die("unpack_trees takes at most four trees");
+ if (len > MAX_UNPACK_TREES)
+ die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES);
memset(&state, 0, sizeof(state));
state.base_dir = "";
state.force = 1;