1 /* 2 * Copyright (c) 2014, 2015, 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 TestEmptyBootstrapMethodsAttr 26 * @bug 8041918 27 * @library /testlibrary 28 * @summary Test empty bootstrap_methods table within BootstrapMethods attribute 29 * @modules java.base/sun.misc 30 * java.management 31 * @compile TestEmptyBootstrapMethodsAttr.java 32 * @run main TestEmptyBootstrapMethodsAttr 33 */ 34 35 import java.io.File; 36 import jdk.test.lib.*; 37 38 public class TestEmptyBootstrapMethodsAttr { 39 40 public static void main(String args[]) throws Throwable { 41 System.out.println("Regression test for bug 8041918"); 42 String jarFile = System.getProperty("test.src") + File.separator + "emptynumbootstrapmethods.jar"; 43 44 // ====== extract the test case 45 ProcessBuilder pb = new ProcessBuilder(new String[] { JDKToolFinder.getJDKTool("jar"), "xvf", jarFile } ); 46 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 47 output.shouldHaveExitValue(0); 48 49 // Test case #1: 50 // Try loading class with empty bootstrap_methods table where no 51 // other attributes are following BootstrapMethods in attribute table. 52 String className = "emptynumbootstrapmethods1"; 53 54 // ======= execute test case #1 55 // Expect a lack of main method, this implies that the class loaded correctly 56 // with an empty bootstrap_methods and did not generate a ClassFormatError. 57 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className); 58 output = new OutputAnalyzer(pb.start()); 59 output.shouldNotContain("java.lang.ClassFormatError"); 60 output.shouldContain("Main method not found in class " + className); 61 output.shouldHaveExitValue(1); 62 63 // Test case #2: 64 // Try loading class with empty bootstrap_methods table where an 65 // AnnotationDefault attribute follows the BootstrapMethods in the attribute table. 66 className = "emptynumbootstrapmethods2"; 67 68 // ======= execute test case #2 69 // Expect a lack of main method, this implies that the class loaded correctly 70 // with an empty bootstrap_methods and did not generate ClassFormatError. 71 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className); 72 output = new OutputAnalyzer(pb.start()); 73 output.shouldNotContain("java.lang.ClassFormatError"); 74 output.shouldContain("Main method not found in class " + className); 75 output.shouldHaveExitValue(1); 76 } 77 }