Allow values to be returned from implicitly typed setters

pkg/analyzer/test/src/task/strong/checker_test.dart

Index: pkg/analyzer/test/src/task/strong/checker_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/checker_test.dart b/pkg/analyzer/test/src/task/strong/checker_test.dart
index ec1f92c41174c251e272616a9bc772f8e3b2adac..dae9ab38d8e427bc692c43aa0119e30cc7738765 100644
--- a/pkg/analyzer/test/src/task/strong/checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/checker_test.dart
@@ -62,6 +62,24 @@ void main() {
       ''');
   });
 
+  test('setter return types', () {
+    checkFile('''
+      void voidFn() => null;
+      class A {
+        set a(y) => 4;
+        set b(y) => voidFn();
+        void set c(y) => /*warning:RETURN_OF_INVALID_TYPE*/4;
+        void set d(y) => voidFn();
+        /*warning:NON_VOID_RETURN_FOR_SETTER*/int set e(y) => 4;
+        /*warning:NON_VOID_RETURN_FOR_SETTER*/int set f(y) => /*warning:RETURN_OF_INVALID_TYPE*/voidFn();
+        set g(y) {return /*warning:RETURN_OF_INVALID_TYPE*/4;}
+        void set h(y) {return /*warning:RETURN_OF_INVALID_TYPE*/4;}
+        /*warning:NON_VOID_RETURN_FOR_SETTER*/int set i(y) {return 4;}
+      }
+    ''');
+
+  });
+
   test('if/for/do/while statements use boolean conversion', () {
     checkFile('''
       main() {