sha1_file.c: introduce a null_oid constant
null_oid is the struct object_id equivalent to null_sha1.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/cache.h b/cache.h
index 614040e..071eece 100644
--- a/cache.h
+++ b/cache.h
@@ -813,6 +813,7 @@
extern int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len);
extern const unsigned char null_sha1[GIT_SHA1_RAWSZ];
+extern const struct object_id null_oid;
static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
{
diff --git a/sha1_file.c b/sha1_file.c
index 27ce7b7..a54deb0 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -36,6 +36,7 @@
static inline uintmax_t sz_fmt(size_t s) { return s; }
const unsigned char null_sha1[20];
+const struct object_id null_oid;
/*
* This is meant to hold a *small* number of objects that you would
