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 26 * @bug 8033930 8033913 27 * @summary bad formatting of StackMapTable entries 28 * @modules jdk.compiler 29 */ 30 31 import java.io.*; 32 import java.util.*; 33 34 public class StackMapTableTest { 35 public static void main(String... args) throws Exception { 36 new StackMapTableTest().run(); 37 } 38 39 void run() throws Exception { 40 String testClasses = System.getProperty("test.classes"); 41 String out = javap("-v", "-classpath", testClasses, A.class.getName()); 42 43 String nl = System.getProperty("line.separator"); 44 out = out.replaceAll(nl, "\n"); 45 46 if (out.contains("\n\n\n")) 47 error("double blank line found"); 48 49 String expect = 50 " StackMapTable: number_of_entries = 2\n" + 51 " frame_type = 252 /* append */\n" + 52 " offset_delta = 2\n" + 53 " locals = [ int ]\n" + 54 " frame_type = 250 /* chop */\n" + 55 " offset_delta = 18\n"; 56 if (!out.contains(expect)) 57 error("expected text not found"); 58 59 if (errors > 0) 60 throw new Exception(errors + " errors found"); 61 } 62 63 String javap(String... args) throws Exception { 64 StringWriter sw = new StringWriter(); 65 PrintWriter out = new PrintWriter(sw); 66 int rc = com.sun.tools.javap.Main.run(args, out); 67 out.close(); 68 System.out.println(sw.toString()); 69 if (rc < 0) 70 throw new Exception("javap exited, rc=" + rc); 71 return sw.toString(); 72 } 73 74 void error(String msg) { 75 System.out.println("Error: " + msg); 76 errors++; 77 } 78 79 int errors; 80 81 /** Simple test class to run through javap. */ 82 public class A { 83 public void a() { 84 for (int i = 0; i < 10; i++) { 85 System.out.println(i); 86 } 87 } 88 public void b() { 89 } 90 public void c() { 91 } 92 } 93 }