Mon, 17 Oct 2011 12:54:33 +0100
7097436: Project Coin: duplicate varargs warnings on method annotated with @SafeVarargs
Summary: Duplicate aliasing check during subtyping leads to spurious varargs diagnostic
Reviewed-by: jjg
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /* |
aoqi@0 | 25 | * @test |
aoqi@0 | 26 | * @bug 7068902 |
aoqi@0 | 27 | * @summary verify that string folding can be enabled or disabled |
aoqi@0 | 28 | */ |
aoqi@0 | 29 | |
aoqi@0 | 30 | import com.sun.source.tree.CompilationUnitTree; |
aoqi@0 | 31 | import com.sun.source.util.JavacTask; |
aoqi@0 | 32 | import java.io.File; |
aoqi@0 | 33 | import java.io.IOException; |
aoqi@0 | 34 | import java.net.URI; |
aoqi@0 | 35 | import java.util.ArrayList; |
aoqi@0 | 36 | import java.util.Arrays; |
aoqi@0 | 37 | import java.util.List; |
aoqi@0 | 38 | import javax.tools.JavaCompiler; |
aoqi@0 | 39 | import javax.tools.JavaFileObject; |
aoqi@0 | 40 | import javax.tools.SimpleJavaFileObject; |
aoqi@0 | 41 | import javax.tools.ToolProvider; |
aoqi@0 | 42 | |
aoqi@0 | 43 | public class StringFoldingTest { |
aoqi@0 | 44 | final JavaCompiler tool; |
aoqi@0 | 45 | final JavaSource source; |
aoqi@0 | 46 | |
aoqi@0 | 47 | public StringFoldingTest() { |
aoqi@0 | 48 | tool = ToolProvider.getSystemJavaCompiler(); |
aoqi@0 | 49 | source = new JavaSource(); |
aoqi@0 | 50 | } |
aoqi@0 | 51 | |
aoqi@0 | 52 | static class JavaSource extends SimpleJavaFileObject { |
aoqi@0 | 53 | |
aoqi@0 | 54 | final static String source = |
aoqi@0 | 55 | "class C {String X=\"F\" + \"O\" + \"L\" + \"D\" + \"E\" + \"D\";}"; |
aoqi@0 | 56 | |
aoqi@0 | 57 | JavaSource() { |
aoqi@0 | 58 | super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE); |
aoqi@0 | 59 | } |
aoqi@0 | 60 | |
aoqi@0 | 61 | @Override |
aoqi@0 | 62 | public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
aoqi@0 | 63 | return source; |
aoqi@0 | 64 | } |
aoqi@0 | 65 | } |
aoqi@0 | 66 | |
aoqi@0 | 67 | public static void main(String... args) throws IOException { |
aoqi@0 | 68 | StringFoldingTest t = new StringFoldingTest(); |
aoqi@0 | 69 | t.run(false); |
aoqi@0 | 70 | t.run(true); |
aoqi@0 | 71 | } |
aoqi@0 | 72 | |
aoqi@0 | 73 | void run(boolean disableStringFolding) throws IOException { |
aoqi@0 | 74 | List<String> argsList = new ArrayList<String>(); |
aoqi@0 | 75 | if (disableStringFolding) { |
aoqi@0 | 76 | argsList.add("-XDallowStringFolding=false"); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | JavacTask ct = (JavacTask)tool.getTask(null, null, null, |
aoqi@0 | 79 | argsList, |
aoqi@0 | 80 | null, |
aoqi@0 | 81 | Arrays.asList(source)); |
aoqi@0 | 82 | Iterable<? extends CompilationUnitTree> trees = ct.parse(); |
aoqi@0 | 83 | String text = trees.toString(); |
aoqi@0 | 84 | System.out.println(text); |
aoqi@0 | 85 | |
aoqi@0 | 86 | if (disableStringFolding) { |
aoqi@0 | 87 | if (text.contains("FOLDED")) { |
aoqi@0 | 88 | throw new AssertionError("Expected string folding"); |
aoqi@0 | 89 | } |
aoqi@0 | 90 | } else { |
aoqi@0 | 91 | if (!text.contains("FOLDED")) { |
aoqi@0 | 92 | throw new AssertionError("Expected no string folding"); |
aoqi@0 | 93 | } |
aoqi@0 | 94 | } |
aoqi@0 | 95 | } |
aoqi@0 | 96 | } |