X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=sha1_file.c;h=4ea0b18d0aaeca48ed75ed21863195c5ce830cbc;hb=264b774ba6b27cc07ef4c33d52e491d9abf029bb;hp=1d996a199036c115d46c1d630d53edf29b3b78e7;hpb=d0410af7f0ee4f0f980f2028772781c37c31a083;p=git.git

diff --git a/sha1_file.c b/sha1_file.c
index 1d996a199..4ea0b18d0 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2144,13 +2144,26 @@ static void *read_object(const unsigned char *sha1, enum object_type *type,
 	return read_packed_sha1(sha1, type, size);
 }
 
-void *read_sha1_file(const unsigned char *sha1, enum object_type *type,
-		     unsigned long *size)
+void *read_sha1_file_repl(const unsigned char *sha1,
+			  enum object_type *type,
+			  unsigned long *size,
+			  const unsigned char **replacement)
 {
-	void *data = read_object(sha1, type, size);
+	const unsigned char *repl = lookup_replace_object(sha1);
+	void *data = read_object(repl, type, size);
+
+	/* die if we replaced an object with one that does not exist */
+	if (!data && repl != sha1)
+		die("replacement %s not found for %s",
+		    sha1_to_hex(repl), sha1_to_hex(sha1));
+
 	/* legacy behavior is to die on corrupted objects */
-	if (!data && (has_loose_object(sha1) || has_packed_and_bad(sha1)))
-		die("object %s is corrupted", sha1_to_hex(sha1));
+	if (!data && (has_loose_object(repl) || has_packed_and_bad(repl)))
+		die("object %s is corrupted", sha1_to_hex(repl));
+
+	if (replacement)
+		*replacement = repl;
+
 	return data;
 }