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/*
* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8024039
* @summary javac, previous solution for JDK-8022186 was incorrect
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.util
* jdk.jdeps/com.sun.tools.classfile
* @build toolbox.ToolBox toolbox.JavacTask
* @run main NoDeadCodeGenerationOnTrySmtTest
*/
import java.io.File;
import java.nio.file.Paths;
import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.Code_attribute;
import com.sun.tools.classfile.Code_attribute.Exception_data;
import com.sun.tools.classfile.Method;
import com.sun.tools.javac.util.Assert;
import toolbox.JavacTask;
import toolbox.ToolBox;
public class NoDeadCodeGenerationOnTrySmtTest {
static final String testSource =
"public class Test {\n" +
" void m1(int arg) {\n" +
" synchronized (new Integer(arg)) {\n" +
" {\n" +
" label0:\n" +
" do {\n" +
" break label0;\n" +
" } while (arg != 0);\n" +
" }\n" +
" }\n" +
" }\n" +
" void m2(int arg) {\n" +
" synchronized (new Integer(arg)) {\n" +
" {\n" +
" label0:\n" +
" {\n" +
" break label0;\n" +
" }\n" +
" }\n" +
" }\n" +
" }\n" +
"}";
static final int[][] expectedExceptionTable = {
// {from, to, target, type},
{11, 13, 16, 0},
{16, 19, 16, 0}
};
static final String[] methodsToLookFor = {"m1", "m2"};
ToolBox tb = new ToolBox();
public static void main(String[] args) throws Exception {
new NoDeadCodeGenerationOnTrySmtTest().run();
}
void run() throws Exception {
compileTestClass();
checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
"Test.class").toUri()), methodsToLookFor);
}
void compileTestClass() throws Exception {
new JavacTask(tb)
.sources(testSource)
.run();
}
void checkClassFile(final File cfile, String[] methodsToFind) throws Exception {
ClassFile classFile = ClassFile.read(cfile);
int numberOfmethodsFound = 0;
for (String methodToFind : methodsToFind) {
for (Method method : classFile.methods) {
if (method.getName(classFile.constant_pool).equals(methodToFind)) {
numberOfmethodsFound++;
Code_attribute code = (Code_attribute) method.attributes.get("Code");
Assert.check(code.exception_table_length == expectedExceptionTable.length,
"The ExceptionTable found has a length different to the expected one");
int i = 0;
for (Exception_data entry: code.exception_table) {
Assert.check(entry.start_pc == expectedExceptionTable[i][0] &&
entry.end_pc == expectedExceptionTable[i][1] &&
entry.handler_pc == expectedExceptionTable[i][2] &&
entry.catch_type == expectedExceptionTable[i][3],
"Exception table entry at pos " + i + " differ from expected.");
i++;
}
}
}
}
Assert.check(numberOfmethodsFound == 2, "Some seek methods were not found");
}
void error(String msg) {
throw new AssertionError(msg);
}
}
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