1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @summary Test that stack tracing isn't broken if an exception is thrown 27 * in a hidden class. 28 * @library /test/lib 29 * @modules java.compiler 30 * java.management 31 * @run main HiddenClassStack 32 */ 33 34 import java.io.ByteArrayOutputStream; 35 import java.io.PrintStream; 36 import java.lang.invoke.MethodType; 37 import java.lang.invoke.MethodHandles; 38 import java.lang.invoke.MethodHandles.Lookup; 39 import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*; 40 import jdk.test.lib.compiler.InMemoryJavaCompiler; 41 42 // This test is based on vmTestbase/vm/mlvm/anonloader/func/classNameInStackTrace/Test.java 43 public class HiddenClassStack { 44 45 static byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", 46 "public class TestClass { " + 47 " public TestClass() { " + 48 " throw new RuntimeException(\"boom\"); " + 49 " } } "); 50 51 public static void main(String[] args) throws Throwable { 52 53 // An exception is thrown by class loaded by lookup.defineHiddenClass(). 54 // Verify that the exception's stack trace contains name of the current 55 // test class. 56 try { 57 Lookup lookup = MethodHandles.lookup(); 58 Class<?> cl = lookup.defineHiddenClass(klassbuf, false, NESTMATE).lookupClass(); 59 Object obj = cl.newInstance(); 60 throw new Exception("Expected RuntimeException not thrown"); 61 } catch (RuntimeException e) { 62 if (!e.getMessage().contains("boom")) { 63 throw new RuntimeException("Wrong RuntimeException, e: " + e.toString()); 64 } 65 ByteArrayOutputStream byteOS = new ByteArrayOutputStream(); 66 PrintStream printStream = new PrintStream(byteOS); 67 e.printStackTrace(printStream); 68 printStream.close(); 69 String stackTrace = byteOS.toString("ASCII"); 70 if (!stackTrace.contains(HiddenClassStack.class.getName())) { 71 throw new RuntimeException("HiddenClassStack missing from stacktrace: " + 72 stackTrace); 73 } 74 } 75 } 76 }