1 files changed, 8 insertions, 40 deletions

diff --git a/line-log.c b/line-log.c
index 717638b333..b7864ad586 100644
--- a/line-log.c
+++ b/line-log.c
@@ -533,7 +533,7 @@ static void fill_line_ends(struct diff_filespec *spec, long *lines,
 	}
 
 	/* shrink the array to fit the elements */
-	ends = xrealloc(ends, cur * sizeof(*ends));
+	REALLOC_ARRAY(ends, cur);
 	*lines = cur-1;
 	*line_ends = ends;
 }
@@ -766,27 +766,6 @@ void line_log_init(struct rev_info *rev, const char *prefix, struct string_list
 	}
 }
 
-static void load_tree_desc(struct tree_desc *desc, void **tree,
-			   const unsigned char *sha1)
-{
-	unsigned long size;
-	*tree = read_object_with_reference(sha1, tree_type, &size, NULL);
-	if (!*tree)
-		die("Unable to read tree (%s)", sha1_to_hex(sha1));
-	init_tree_desc(desc, *tree, size);
-}
-
-static int count_parents(struct commit *commit)
-{
-	struct commit_list *parents = commit->parents;
-	int count = 0;
-	while (parents) {
-		count++;
-		parents = parents->next;
-	}
-	return count;
-}
-
 static void move_diff_queue(struct diff_queue_struct *dst,
 			    struct diff_queue_struct *src)
 {
@@ -842,18 +821,11 @@ static void queue_diffs(struct line_log_data *range,
 			struct diff_queue_struct *queue,
 			struct commit *commit, struct commit *parent)
 {
-	void *tree1 = NULL, *tree2 = NULL;
-	struct tree_desc desc1, desc2;
-
 	assert(commit);
-	load_tree_desc(&desc2, &tree2, commit->tree->object.sha1);
-	if (parent)
-		load_tree_desc(&desc1, &tree1, parent->tree->object.sha1);
-	else
-		init_tree_desc(&desc1, "", 0);
 
 	DIFF_QUEUE_CLEAR(&diff_queued_diff);
-	diff_tree(&desc1, &desc2, "", opt);
+	diff_tree_sha1(parent ? parent->tree->object.sha1 : NULL,
+			commit->tree->object.sha1, "", opt);
 	if (opt->detect_rename) {
 		filter_diffs_for_paths(range, 1);
 		if (diff_might_be_rename())
@@ -861,11 +833,6 @@ static void queue_diffs(struct line_log_data *range,
 		filter_diffs_for_paths(range, 0);
 	}
 	move_diff_queue(queue, &diff_queued_diff);
-
-	if (tree1)
-		free(tree1);
-	if (tree2)
-		free(tree2);
 }
 
 static char *get_nth_line(long line, unsigned long *ends, void *data)
@@ -1172,7 +1139,10 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
 	struct commit **parents;
 	struct commit_list *p;
 	int i;
-	int nparents = count_parents(commit);
+	int nparents = commit_list_count(commit->parents);
+
+	if (nparents > 1 && rev->first_parent_only)
+		nparents = 1;
 
 	diffqueues = xmalloc(nparents * sizeof(*diffqueues));
 	cand = xmalloc(nparents * sizeof(*cand));
@@ -1196,9 +1166,7 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
 			 */
 			add_line_range(rev, parents[i], cand[i]);
 			clear_commit_line_range(rev, commit);
-			commit->parents = xmalloc(sizeof(struct commit_list));
-			commit->parents->item = parents[i];
-			commit->parents->next = NULL;
+			commit_list_append(parents[i], &commit->parents);
 			free(parents);
 			free(cand);
 			free_diffqueues(nparents, diffqueues);