avm2: Convert invalid rectangle to zero rectangle in getBounds

core/src/avm2/globals/flash/display/display_object.rs

@@ -960,7 +960,7 @@ pub fn get_bounds<'gc>(
             .and_then(|o| o.as_display_object())
             .unwrap_or(dobj);
         let bounds = dobj.bounds();
-        let out_bounds = if DisplayObject::ptr_eq(dobj, target) {
+        let mut out_bounds = if DisplayObject::ptr_eq(dobj, target) {
             // Getting the clips bounds in its own coordinate space; no AABB transform needed.
             bounds
         } else {
@@ -972,6 +972,9 @@ pub fn get_bounds<'gc>(
             let to_target_matrix = target.global_to_local_matrix().unwrap_or_default();
             to_target_matrix * to_global_matrix * bounds
         };
+        if !out_bounds.is_valid() {
+            out_bounds = Rectangle::ZERO;
+        }
 
         return Ok(new_rectangle(activation, out_bounds)?.into());
     }

swf/src/types/rectangle.rs

@@ -65,6 +65,13 @@ impl<T: Coordinate> Rectangle<T> {
         y_max: T::INVALID,
     };
 
+    pub const ZERO: Self = Self {
+        x_min: T::ZERO,
+        x_max: T::ZERO,
+        y_min: T::ZERO,
+        y_max: T::ZERO,
+    };
+
     #[inline]
     #[must_use]
     pub fn is_valid(&self) -> bool {

tests/tests/swfs/avm2/empty_bounds/Test.as

@@ -0,0 +1,14 @@
+package  {
+	
+	import flash.display.MovieClip;
+	
+	
+	public class Test extends MovieClip {
+		
+		
+		public function Test() {
+			trace("Bounds: " + this.getBounds(this));
+		}
+	}
+	
+}

tests/tests/swfs/avm2/empty_bounds/output.txt

@@ -0,0 +1 @@
+Bounds: (x=0, y=0, w=0, h=0)

tests/tests/swfs/avm2/empty_bounds/test.toml

@@ -0,0 +1 @@
+num_ticks = 1