8034147: javac crashes with a NullPointerException during bounds checking

Summary: Types.supertype should return Type.noType rather than null
Reviewed-by: vromero, mcimadamore

1 files changed, 35 insertions, 0 deletions

diff --git a/test/tools/javac/generics/wildcards/T8034147.java b/test/tools/javac/generics/wildcards/T8034147.java
new file mode 100644
index 00000000..4baade1e
--- /dev/null
+++ b/test/tools/javac/generics/wildcards/T8034147.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8034147
+ * @summary javac crashes with a NullPointerException during bounds checking
+ * @compile T8034147.java
+ */
+
+class T8034147 {
+    static class One<X extends Two<? super X>> {}
+    static class Two<Y extends Three<? extends Y>> implements Three<Y> {}
+    interface Three<Z> {}
+}