notes: don't access hash of NULL object_id pointer

diff --git a/builtin/blame.c b/builtin/blame.c
index 1043e5376f35bd56f498f9078676c08ffcff687d..7645aa991daadcf5beb87048cc64e49849f1ee10 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -163,7 +163,7 @@ int textconv_object(const char *path,
        struct userdiff_driver *textconv;
 
        df = alloc_filespec(path);
-       fill_filespec(df, oid->hash, oid_valid, mode);
+       fill_filespec(df, oid, oid_valid, mode);
        textconv = get_textconv(df);
        if (!textconv) {
                free_filespec(df);
@@ -565,9 +565,9 @@ static struct origin *find_origin(struct scoreboard *sb,
        if (is_null_oid(&origin->commit->object.oid))
                do_diff_cache(&parent->tree->object.oid, &diff_opts);
        else
-               diff_tree_sha1(parent->tree->object.oid.hash,
-                              origin->commit->tree->object.oid.hash,
-                              "", &diff_opts);
+               diff_tree_oid(&parent->tree->object.oid,
+                             &origin->commit->tree->object.oid,
+                             "", &diff_opts);
        diffcore_std(&diff_opts);
 
        if (!diff_queued_diff.nr) {
@@ -635,9 +635,9 @@ static struct origin *find_rename(struct scoreboard *sb,
        if (is_null_oid(&origin->commit->object.oid))
                do_diff_cache(&parent->tree->object.oid, &diff_opts);
        else
-               diff_tree_sha1(parent->tree->object.oid.hash,
-                              origin->commit->tree->object.oid.hash,
-                              "", &diff_opts);
+               diff_tree_oid(&parent->tree->object.oid,
+                             &origin->commit->tree->object.oid,
+                             "", &diff_opts);
        diffcore_std(&diff_opts);
 
        for (i = 0; i < diff_queued_diff.nr; i++) {
@@ -1262,7 +1262,7 @@ static void find_copy_in_parent(struct scoreboard *sb,
        /* Try "find copies harder" on new path if requested;
         * we do not want to use diffcore_rename() actually to
         * match things up; find_copies_harder is set only to
-        * force diff_tree_sha1() to feed all filepairs to diff_queue,
+        * force diff_tree_oid() to feed all filepairs to diff_queue,
         * and this code needs to be after diff_setup_done(), which
         * usually makes find-copies-harder imply copy detection.
         */
@@ -1274,9 +1274,9 @@ static void find_copy_in_parent(struct scoreboard *sb,
        if (is_null_oid(&target->commit->object.oid))
                do_diff_cache(&parent->tree->object.oid, &diff_opts);
        else
-               diff_tree_sha1(parent->tree->object.oid.hash,
-                              target->commit->tree->object.oid.hash,
-                              "", &diff_opts);
+               diff_tree_oid(&parent->tree->object.oid,
+                             &target->commit->tree->object.oid,
+                             "", &diff_opts);
 
        if (!DIFF_OPT_TST(&diff_opts, FIND_COPIES_HARDER))
                diffcore_std(&diff_opts);