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 jdk.compiler 30 * @run main HiddenClassStack 31 */ 32 33 import java.io.ByteArrayOutputStream; 34 import java.io.PrintStream; 35 import java.lang.invoke.MethodType; 36 import java.lang.invoke.MethodHandles; 37 import java.lang.invoke.MethodHandles.Lookup; 38 import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*; 39 import jdk.test.lib.compiler.InMemoryJavaCompiler; 40 41 // This test is based on vmTestbase/vm/mlvm/anonloader/func/classNameInStackTrace/Test.java 42 public class HiddenClassStack { 43 44 static byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", 45 "public class TestClass { " + 46 " public TestClass() { " + 47 " throw new RuntimeException(\"boom\"); " + 48 " } } "); 49 50 public static void main(String[] args) throws Throwable { 51 52 // An exception is thrown by class loaded by lookup.defineHiddenClass(). 53 // Verify that the exception's stack trace contains name of the current 54 // test class. 55 try { 56 Lookup lookup = MethodHandles.lookup(); 57 Class<?> cl = lookup.defineHiddenClass(klassbuf, false, NESTMATE).lookupClass(); 58 Object obj = cl.newInstance(); 59 throw new Exception("Expected RuntimeException not thrown"); 60 } catch (RuntimeException e) { 61 if (!e.getMessage().contains("boom")) { 62 throw new RuntimeException("Wrong RuntimeException, e: " + e.toString()); 63 } 64 ByteArrayOutputStream byteOS = new ByteArrayOutputStream(); 65 PrintStream printStream = new PrintStream(byteOS); 66 e.printStackTrace(printStream); 67 printStream.close(); 68 String stackTrace = byteOS.toString("ASCII"); 69 if (!stackTrace.contains(HiddenClassStack.class.getName())) { 70 throw new RuntimeException("HiddenClassStack missing from stacktrace: " + 71 stackTrace); 72 } 73 } 74 } 75 }