1/* 2 * Copyright (c) 2013, 2016, 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 8024039 27 * @summary javac, previous solution for JDK-8022186 was incorrect 28 * @library /tools/lib 29 * @modules jdk.compiler/com.sun.tools.javac.api 30 * jdk.compiler/com.sun.tools.javac.main 31 * jdk.compiler/com.sun.tools.javac.util 32 * jdk.jdeps/com.sun.tools.classfile 33 * @build toolbox.ToolBox toolbox.JavacTask 34 * @run main NoDeadCodeGenerationOnTrySmtTest 35 */ 36 37import java.io.File; 38import java.nio.file.Paths; 39 40import com.sun.tools.classfile.ClassFile; 41import com.sun.tools.classfile.Code_attribute; 42import com.sun.tools.classfile.Code_attribute.Exception_data; 43import com.sun.tools.classfile.Method; 44import com.sun.tools.javac.util.Assert; 45 46import toolbox.JavacTask; 47import toolbox.ToolBox; 48 49public class NoDeadCodeGenerationOnTrySmtTest { 50 51 static final String testSource = 52 "public class Test {\n" + 53 " void m1(int arg) {\n" + 54 " synchronized (new Integer(arg)) {\n" + 55 " {\n" + 56 " label0:\n" + 57 " do {\n" + 58 " break label0;\n" + 59 " } while (arg != 0);\n" + 60 " }\n" + 61 " }\n" + 62 " }\n" + 63 64 " void m2(int arg) {\n" + 65 " synchronized (new Integer(arg)) {\n" + 66 " {\n" + 67 " label0:\n" + 68 " {\n" + 69 " break label0;\n" + 70 " }\n" + 71 " }\n" + 72 " }\n" + 73 " }\n" + 74 "}"; 75 76 static final int[][] expectedExceptionTable = { 77 // {from, to, target, type}, 78 {11, 13, 16, 0}, 79 {16, 19, 16, 0} 80 }; 81 82 static final String[] methodsToLookFor = {"m1", "m2"}; 83 84 ToolBox tb = new ToolBox(); 85 86 public static void main(String[] args) throws Exception { 87 new NoDeadCodeGenerationOnTrySmtTest().run(); 88 } 89 90 void run() throws Exception { 91 compileTestClass(); 92 checkClassFile(new File(Paths.get(System.getProperty("user.dir"), 93 "Test.class").toUri()), methodsToLookFor); 94 } 95 96 void compileTestClass() throws Exception { 97 new JavacTask(tb) 98 .sources(testSource) 99 .run(); 100 } 101 102 void checkClassFile(final File cfile, String[] methodsToFind) throws Exception { 103 ClassFile classFile = ClassFile.read(cfile); 104 int numberOfmethodsFound = 0; 105 for (String methodToFind : methodsToFind) { 106 for (Method method : classFile.methods) { 107 if (method.getName(classFile.constant_pool).equals(methodToFind)) { 108 numberOfmethodsFound++; 109 Code_attribute code = (Code_attribute) method.attributes.get("Code"); 110 Assert.check(code.exception_table_length == expectedExceptionTable.length, 111 "The ExceptionTable found has a length different to the expected one"); 112 int i = 0; 113 for (Exception_data entry: code.exception_table) { 114 Assert.check(entry.start_pc == expectedExceptionTable[i][0] && 115 entry.end_pc == expectedExceptionTable[i][1] && 116 entry.handler_pc == expectedExceptionTable[i][2] && 117 entry.catch_type == expectedExceptionTable[i][3], 118 "Exception table entry at pos " + i + " differ from expected."); 119 i++; 120 } 121 } 122 } 123 } 124 Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found"); 125 } 126 127 void error(String msg) { 128 throw new AssertionError(msg); 129 } 130 131} 132