add test case

apache · Apr 6, 2022 · 0a9da2a · 0a9da2a
1 parent 15f970d
commit 0a9da2a
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/src/test/groovy/transform/stc/GenericsSTCTest.groovy b/src/test/groovy/transform/stc/GenericsSTCTest.groovy
@@ -4398,6 +4398,20 @@ class GenericsSTCTest extends StaticTypeCheckingTestCase {
         }
     }
 
+    // GROOVY-9968
+    void testSelfReferentialTypeParameter4() {
+        assertScript '''
+            abstract class A<B extends A<?>> implements Iterable<B> {
+            }
+            void m(A iterable) {
+                iterable?.each {
+                    m(it)
+                }
+            }
+            m(null)
+        '''
+    }
+
     // GROOVY-7804
     void testParameterlessClosureToGenericSAMTypeArgumentCoercion() {
         assertScript '''