Merge branch 'jk/empty-tree'

[git.git] / sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index d9da7c8f75c8f44a62661d92b6f8e5266df83a73..1ddb96bb82b60f4da8489664d13f398d88bf5a15 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1845,6 +1845,15 @@ static struct cached_object {
 } *cached_objects;
 static int cached_object_nr, cached_object_alloc;
 
+static struct cached_object empty_tree = {
+       /* empty tree sha1: 4b825dc642cb6eb9a060e54bf8d69288fbee4904 */
+       "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60"
+       "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04",
+       OBJ_TREE,
+       "",
+       0
+};
+
 static struct cached_object *find_cached_object(const unsigned char *sha1)
 {
        int i;
@@ -1854,6 +1863,8 @@ static struct cached_object *find_cached_object(const unsigned char *sha1)
                if (!hashcmp(co->sha1, sha1))
                        return co;
        }
+       if (!hashcmp(sha1, empty_tree.sha1))
+               return &empty_tree;
        return NULL;
 }