Thu, 30 Jul 2009 10:29:53 +0100
6827648: Extremely slow compilation time for visitor pattern code + generics
Summary: Javac unnecessarily recomputates type-substitutions multiple times
Reviewed-by: jjg
1 /*
2 * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
24 /**
25 * @test
26 * @bug 6410653 6401277
27 * @summary REGRESSION: javac crashes if -d or -s argument is a file
28 * @author Peter von der Ah\u00e9
29 */
31 import java.lang.reflect.Method;
32 import java.io.File;
33 import java.io.ByteArrayOutputStream;
34 import javax.tools.*;
36 public class T6410653 {
37 public static void main(String... args) throws Exception {
38 File testSrc = new File(System.getProperty("test.src"));
39 String source = new File(testSrc, "T6410653.java").getPath();
40 ClassLoader cl = ToolProvider.getSystemToolClassLoader();
41 Tool compiler = ToolProvider.getSystemJavaCompiler();
42 Class<?> main = Class.forName("com.sun.tools.javac.main.Main", true, cl);
43 Method useRawMessages = main.getMethod("useRawMessages", boolean.class);
44 useRawMessages.invoke(null, true);
45 ByteArrayOutputStream out = new ByteArrayOutputStream();
46 compiler.run(null, null, out, "-d", source, source);
47 useRawMessages.invoke(null, false);
48 if (!out.toString().equals(String.format("%s%n%s%n",
49 "javac: javac.err.file.not.directory",
50 "javac.msg.usage"))) {
51 throw new AssertionError(out);
52 }
53 System.out.println("Test PASSED. Running javac again to see localized output:");
54 compiler.run(null, null, System.out, "-d", source, source);
55 }
56 }