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