8139069: JVM should throw ClassFormatError for <init> methods in interfaces

If method being parsed is in an interface, throw ClassFormatError if its name is "<init>"

Reviewed-by: acorn, lfoltan

hotspot/test/runtime/classFileParserBug/InitInInterface.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2015, 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 8139069
+ * @summary Check that any method named <init> in an interface causes ClassFormatError
+ * @compile nonvoidinit.jasm voidinit.jasm
+ * @run main InitInInterface
+ */
+
+// Test that an <init> method is not allowed in interfaces.
+public class InitInInterface {
+    public static void main(String args[]) throws Throwable {
+
+        System.out.println("Regression test for bug 8130183");
+        try {
+            Class newClass = Class.forName("nonvoidinit");
+            throw new RuntimeException(
+                 "ClassFormatError not thrown for non-void <init> in an interface");
+        } catch (java.lang.ClassFormatError e) {
+            if (!e.getMessage().contains("Interface cannot have a method named <init>")) {
+                throw new RuntimeException("Unexpected exception nonvoidint: " + e.getMessage());
+            }
+        }
+        try {
+            Class newClass = Class.forName("voidinit");
+            throw new RuntimeException(
+                 "ClassFormatError not thrown for void <init> in an interface");
+        } catch (java.lang.ClassFormatError e) {
+            if (!e.getMessage().contains("Interface cannot have a method named <init>")) {
+                throw new RuntimeException("Unexpected exception voidint: " + e.getMessage());
+            }
+        }
+    }
+}