Handle degenerate case in pixman_init_extents()

Create an empty region instead

diff --git a/pixman/pixman-region.c b/pixman/pixman-region.c
index a37d381..cb8f1aa 100644 (file)
--- a/pixman/pixman-region.c
+++ b/pixman/pixman-region.c
@@ -356,6 +356,11 @@ PREFIX (_init_rect) (region_type_t *       region,
 PIXMAN_EXPORT void
 PREFIX (_init_with_extents) (region_type_t *region, box_type_t *extents)
 {
+    if (extents->x1 >= extents->x2 || extents->y1 > extents->y2)
+    {
+        PREFIX (_init) (region);
+        return;
+    }
     region->extents = *extents;
 
     region->data = NULL;