builder

1 files changed, 9 insertions, 5 deletions

diff --git a/region-iter.c b/region-iter.c
index 90f8ead..cf64ec2 100644
--- a/region-iter.c
+++ b/region-iter.c
@@ -107,7 +107,8 @@ region_builder_init (region_builder_t *builder)
 }
 
 static pixman_bool_t
-region_builder_add_boxes (region_builder_t *builder, int n, pixman_box32_t *boxes)
+region_builder_add_boxes (region_builder_t *builder,
+			  int n, pixman_box32_t *boxes)
 {
     pixman_region32_data_t *data;
 
@@ -127,14 +128,15 @@ region_builder_add_boxes (region_builder_t *builder, int n, pixman_box32_t *boxe
     return TRUE;
 }
 
-static void
+static pixman_bool_t
 region_builder_finish (region_builder_t *builder, pixman_region32_t *region)
 {
     pixman_region32_fini (region);
 
     if (!builder->data)
     {
-	/* Empty */
+	pixman_region32_init (region);
+	return TRUE;
     }
     else if (builder->data == BROKEN_DATA)
     {
@@ -476,7 +478,8 @@ compare_boxes (const void *box1v, const void *box2v)
 }
 
 static pixman_bool_t
-make_region_from_sorted (pixman_region32_t *region, pixman_box32_t *boxes, int n_boxes)
+make_region_from_sorted (pixman_region32_t *region,
+			 const pixman_box32_t *boxes, int n_boxes)
 {
     if (n_boxes == 1)
     {
@@ -512,7 +515,8 @@ make_region_from_sorted (pixman_region32_t *region, pixman_box32_t *boxes, int n
 }
 
 pixman_bool_t
-region_from_boxes (pixman_region32_t *region, const pixman_box32_t *boxes, int n_boxes)
+region_from_boxes (pixman_region32_t *region,
+		   const pixman_box32_t *boxes, int n_boxes)
 {
     if (n_boxes == 0)
     {