From 346245a1bb6272dd370ba2f7b9bf86d3df5fed9a Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 13 Feb 2008 06:25:04 -0500 Subject: [PATCH] hard-code the empty tree object Now any commands may reference the empty tree object by its sha1 (4b825dc642cb6eb9a060e54bf8d69288fbee4904). This is useful for showing some diffs, especially for initial commits. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- sha1_file.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sha1_file.c b/sha1_file.c index 66a4e00fa8..f7b75b2acc 100644 --- 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; } -- 2.11.4.GIT