aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 8024039
aoqi@0:  * @summary javac, previous solution for JDK-8022186 was incorrect
aoqi@0:  * @library /tools/javac/lib
aoqi@0:  * @build ToolBox
aoqi@0:  * @run main NoDeadCodeGenerationOnTrySmtTest
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.io.File;
aoqi@0: import java.nio.file.Paths;
aoqi@0: 
aoqi@0: import com.sun.tools.classfile.ClassFile;
aoqi@0: import com.sun.tools.classfile.Code_attribute;
aoqi@0: import com.sun.tools.classfile.Code_attribute.Exception_data;
aoqi@0: import com.sun.tools.classfile.Method;
aoqi@0: import com.sun.tools.javac.util.Assert;
aoqi@0: 
aoqi@0: public class NoDeadCodeGenerationOnTrySmtTest {
aoqi@0: 
aoqi@0:     static final String testSource =
aoqi@0:         "public class Test {\n" +
aoqi@0:         "    void m1(int arg) {\n" +
aoqi@0:         "        synchronized (new Integer(arg)) {\n" +
aoqi@0:         "            {\n" +
aoqi@0:         "                label0:\n" +
aoqi@0:         "                do {\n" +
aoqi@0:         "                    break label0;\n" +
aoqi@0:         "                } while (arg != 0);\n" +
aoqi@0:         "            }\n" +
aoqi@0:         "        }\n" +
aoqi@0:         "    }\n" +
aoqi@0: 
aoqi@0:         "    void m2(int arg) {\n" +
aoqi@0:         "        synchronized (new Integer(arg)) {\n" +
aoqi@0:         "            {\n" +
aoqi@0:         "                label0:\n" +
aoqi@0:         "                {\n" +
aoqi@0:         "                    break label0;\n" +
aoqi@0:         "                }\n" +
aoqi@0:         "            }\n" +
aoqi@0:         "        }\n" +
aoqi@0:         "    }\n" +
aoqi@0:         "}";
aoqi@0: 
aoqi@0:     static final int[][] expectedExceptionTable = {
aoqi@0:     //  {from,         to,         target,      type},
aoqi@0:         {11,           13,         16,          0},
aoqi@0:         {16,           19,         16,          0}
aoqi@0:     };
aoqi@0: 
aoqi@0:     static final String[] methodsToLookFor = {"m1", "m2"};
aoqi@0: 
aoqi@0:     public static void main(String[] args) throws Exception {
aoqi@0:         new NoDeadCodeGenerationOnTrySmtTest().run();
aoqi@0:     }
aoqi@0: 
aoqi@0:     void run() throws Exception {
aoqi@0:         compileTestClass();
aoqi@0:         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
aoqi@0:                 "Test.class").toUri()), methodsToLookFor);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void compileTestClass() throws Exception {
aoqi@0:         ToolBox.JavaToolArgs javacSuccessArgs =
aoqi@0:                 new ToolBox.JavaToolArgs().setSources(testSource);
aoqi@0:         ToolBox.javac(javacSuccessArgs);
aoqi@0:     }
aoqi@0: 
aoqi@0:     void checkClassFile(final File cfile, String[] methodsToFind) throws Exception {
aoqi@0:         ClassFile classFile = ClassFile.read(cfile);
aoqi@0:         int numberOfmethodsFound = 0;
aoqi@0:         for (String methodToFind : methodsToFind) {
aoqi@0:             for (Method method : classFile.methods) {
aoqi@0:                 if (method.getName(classFile.constant_pool).equals(methodToFind)) {
aoqi@0:                     numberOfmethodsFound++;
aoqi@0:                     Code_attribute code = (Code_attribute) method.attributes.get("Code");
aoqi@0:                     Assert.check(code.exception_table_length == expectedExceptionTable.length,
aoqi@0:                             "The ExceptionTable found has a length different to the expected one");
aoqi@0:                     int i = 0;
aoqi@0:                     for (Exception_data entry: code.exception_table) {
aoqi@0:                         Assert.check(entry.start_pc == expectedExceptionTable[i][0] &&
aoqi@0:                                 entry.end_pc == expectedExceptionTable[i][1] &&
aoqi@0:                                 entry.handler_pc == expectedExceptionTable[i][2] &&
aoqi@0:                                 entry.catch_type == expectedExceptionTable[i][3],
aoqi@0:                                 "Exception table entry at pos " + i + " differ from expected.");
aoqi@0:                         i++;
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:         Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found");
aoqi@0:     }
aoqi@0: 
aoqi@0:     void error(String msg) {
aoqi@0:         throw new AssertionError(msg);
aoqi@0:     }
aoqi@0: 
aoqi@0: }