fix assert (flutter#8851)

engine-flutter-autoroll · May 4, 2019 · 09fae08 · 09fae08
1 parent bf89afd
commit 09fae08
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/ui/semantics.dart b/lib/ui/semantics.dart
@@ -656,7 +656,7 @@ class SemanticsUpdateBuilder extends NativeFieldWrapperClass2 {
   }) {
     assert(_matrix4IsValid(transform));
     assert(
-      scrollChildren == 0 || (scrollChildren > 0 && childrenInHitTestOrder != null),
+      scrollChildren == 0 || scrollChildren == null || (scrollChildren > 0 && childrenInHitTestOrder != null),
       'If a node has scrollChildren, it must have childrenInHitTestOrder',
     );
     _updateNode(