diff -r 000000000000 -r 959103a6100f test/tools/javac/CyclicInheritance.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/tools/javac/CyclicInheritance.java Wed Apr 27 01:34:52 2016 +0800 @@ -0,0 +1,57 @@ +/* + * @test /nodynamiccopyright/ + * @bug 4018525 4059072 4277274 4785453 + * @summary Test that recursive 'extends' and 'implements' clauses are detected + * and disallowed. + * + * @compile/fail/ref=CyclicInheritance.out -XDrawDiagnostics CyclicInheritance.java + */ + + + + + + +class C1 extends C1 {} // ERROR - Cyclic inheritance + +class C11 extends C12 {} // ERROR - Cyclic inheritance +class C12 extends C11 {} // error in previous line could correctly be reported here as well + +interface I1 extends I1 {} // ERROR - Cyclic inheritance + +interface I11 extends I12 {} // ERROR - Cyclic inheritance +interface I12 extends I11 {} // error in previous line could correctly be reported here as well + +//----- + +class C211 implements C211.I { // ERROR - may change pending resoluation of 4087020 + interface I {}; // error in previous line could correctly be reported here as well +} + +class C212 extends C212.C { // ERROR - Cyclic inheritance, subclass cannot enclose superclass + static class C {}; // error in previous line could correctly be reported here as well +} + + +class C221 implements C221.I { // ERROR - Cannot access C21 (private) + private interface I {}; // error in previous line could correctly be reported here as well +} + +class C222 extends C222.C { // ERROR - Cannot access C22 (private) + private static class C {}; // error in previous line could correctly be reported here as well +} + +//----- + +class C3 { + class A { + class B extends A {} + } +} + +class C4 { + class A extends B {} + class B { + class C extends A {} + } +}