Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java
test/tools/javac/T8024039/NoDeadCodeGenerationOnTrySmtTest.java
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| 1 /* | |
| 2 * Copyright (c) 2013, 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. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 | |
| 26 /* | |
| 27 * @test | |
| 28 * @bug 8024039 | |
| 29 * @summary javac, previous solution for JDK-8022186 was incorrect | |
| 30 * @library /tools/javac/lib | |
| 31 * @build ToolBox | |
| 32 * @run main NoDeadCodeGenerationOnTrySmtTest | |
| 33 */ | |
| 34 | |
| 35 import java.io.File; | |
| 36 import java.nio.file.Paths; | |
| 37 | |
| 38 import com.sun.tools.classfile.ClassFile; | |
| 39 import com.sun.tools.classfile.Code_attribute; | |
| 40 import com.sun.tools.classfile.Code_attribute.Exception_data; | |
| 41 import com.sun.tools.classfile.Method; | |
| 42 import com.sun.tools.javac.util.Assert; | |
| 43 | |
| 44 public class NoDeadCodeGenerationOnTrySmtTest { | |
| 45 | |
| 46 static final String testSource = | |
| 47 "public class Test {\n" + | |
| 48 " void m1(int arg) {\n" + | |
| 49 " synchronized (new Integer(arg)) {\n" + | |
| 50 " {\n" + | |
| 51 " label0:\n" + | |
| 52 " do {\n" + | |
| 53 " break label0;\n" + | |
| 54 " } while (arg != 0);\n" + | |
| 55 " }\n" + | |
| 56 " }\n" + | |
| 57 " }\n" + | |
| 58 | |
| 59 " void m2(int arg) {\n" + | |
| 60 " synchronized (new Integer(arg)) {\n" + | |
| 61 " {\n" + | |
| 62 " label0:\n" + | |
| 63 " {\n" + | |
| 64 " break label0;\n" + | |
| 65 " }\n" + | |
| 66 " }\n" + | |
| 67 " }\n" + | |
| 68 " }\n" + | |
| 69 "}"; | |
| 70 | |
| 71 static final int[][] expectedExceptionTable = { | |
| 72 // {from, to, target, type}, | |
| 73 {11, 13, 16, 0}, | |
| 74 {16, 19, 16, 0} | |
| 75 }; | |
| 76 | |
| 77 static final String[] methodsToLookFor = {"m1", "m2"}; | |
| 78 | |
| 79 public static void main(String[] args) throws Exception { | |
| 80 new NoDeadCodeGenerationOnTrySmtTest().run(); | |
| 81 } | |
| 82 | |
| 83 void run() throws Exception { | |
| 84 compileTestClass(); | |
| 85 checkClassFile(new File(Paths.get(System.getProperty("user.dir"), | |
| 86 "Test.class").toUri()), methodsToLookFor); | |
| 87 } | |
| 88 | |
| 89 void compileTestClass() throws Exception { | |
| 90 ToolBox.JavaToolArgs javacSuccessArgs = | |
| 91 new ToolBox.JavaToolArgs().setSources(testSource); | |
| 92 ToolBox.javac(javacSuccessArgs); | |
| 93 } | |
| 94 | |
| 95 void checkClassFile(final File cfile, String[] methodsToFind) throws Exception { | |
| 96 ClassFile classFile = ClassFile.read(cfile); | |
| 97 int numberOfmethodsFound = 0; | |
| 98 for (String methodToFind : methodsToFind) { | |
| 99 for (Method method : classFile.methods) { | |
| 100 if (method.getName(classFile.constant_pool).equals(methodToFind)) { | |
| 101 numberOfmethodsFound++; | |
| 102 Code_attribute code = (Code_attribute) method.attributes.get("Code"); | |
| 103 Assert.check(code.exception_table_length == expectedExceptionTable.length, | |
| 104 "The ExceptionTable found has a length different to the expected one"); | |
| 105 int i = 0; | |
| 106 for (Exception_data entry: code.exception_table) { | |
| 107 Assert.check(entry.start_pc == expectedExceptionTable[i][0] && | |
| 108 entry.end_pc == expectedExceptionTable[i][1] && | |
| 109 entry.handler_pc == expectedExceptionTable[i][2] && | |
| 110 entry.catch_type == expectedExceptionTable[i][3], | |
| 111 "Exception table entry at pos " + i + " differ from expected."); | |
| 112 i++; | |
| 113 } | |
| 114 } | |
| 115 } | |
| 116 } | |
| 117 Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found"); | |
| 118 } | |
| 119 | |
| 120 void error(String msg) { | |
| 121 throw new AssertionError(msg); | |
| 122 } | |
| 123 | |
| 124 } |
