1/* 2 * Copyright (c) 2011, 2015, 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. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 7068451 27 * @summary Regression: javac compiles fixed sources against previous, 28 * not current, version of generated sources 29 * @modules java.compiler 30 * jdk.compiler 31 */ 32 33import java.io.File; 34import java.io.FileNotFoundException; 35import java.io.FileWriter; 36import java.io.IOException; 37import java.io.Writer; 38import java.nio.file.NoSuchFileException; 39import java.util.Arrays; 40import java.util.Collections; 41import java.util.List; 42import java.util.Set; 43import javax.annotation.processing.AbstractProcessor; 44import javax.annotation.processing.Filer; 45import javax.annotation.processing.Messager; 46import javax.annotation.processing.RoundEnvironment; 47import javax.annotation.processing.SupportedAnnotationTypes; 48import javax.lang.model.SourceVersion; 49import javax.lang.model.element.TypeElement; 50import javax.tools.Diagnostic.Kind; 51import javax.tools.JavaCompiler; 52import javax.tools.JavaCompiler.CompilationTask; 53import javax.tools.StandardJavaFileManager; 54import javax.tools.StandardLocation; 55import javax.tools.ToolProvider; 56 57public class T7068451 { 58 public static void main(String[] args) throws Exception { 59 new T7068451().run(); 60 } 61 62 void run() throws Exception { 63 JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); 64 System.err.println("using " + compiler.getClass() + " from " + compiler.getClass().getProtectionDomain().getCodeSource()); 65 66 File tmp = new File("tmp"); 67 tmp.mkdir(); 68 for (File f: tmp.listFiles()) 69 f.delete(); 70 71 File input = writeFile(tmp, "X.java", "package p; class X { { p.C.first(); } }"); 72 73 List<String> opts = Arrays.asList( 74 "-s", tmp.getPath(), 75 "-d", tmp.getPath(), 76 "-XprintRounds"); 77 78 System.err.println(); 79 System.err.println("FIRST compilation"); 80 System.err.println(); 81 82 try (StandardJavaFileManager fm = compiler.getStandardFileManager(null, null, null)) { 83 CompilationTask task = compiler.getTask(null, fm, null, opts, null, 84 fm.getJavaFileObjects(input)); 85 task.setProcessors(Collections.singleton(new Proc("first"))); 86 check("compilation", task.call()); 87 88 writeFile(tmp, "X.java", "package p; class X { { p.C.second(); } }"); 89 90 //Thread.sleep(2000); 91 92 System.err.println(); 93 System.err.println("SECOND compilation"); 94 System.err.println(); 95 96 task = compiler.getTask(null, fm, null, opts, null, 97 fm.getJavaFileObjects(input)); 98 task.setProcessors(Collections.singleton(new Proc("second"))); 99 check("compilation", task.call()); 100 101 //Thread.sleep(2000); 102 103 System.err.println(); 104 System.err.println("SECOND compilation, REPEATED"); 105 System.err.println(); 106 107 task = compiler.getTask(null, fm, null, opts, null, 108 fm.getJavaFileObjects(input)); 109 task.setProcessors(Collections.singleton(new Proc("second"))); 110 check("compilation", task.call()); 111 } 112 } 113 114 void check(String msg, boolean ok) { 115 System.err.println(msg + ": " + (ok ? "ok" : "failed")); 116 if (!ok) 117 throw new AssertionError(msg); 118 } 119 120 static File writeFile(File base, String path, String body) throws IOException { 121 File f = new File(base, path); 122 FileWriter out = new FileWriter(f); 123 out.write(body); 124 out.close(); 125 System.err.println("wrote " + path + ": " + body); 126 return f; 127 } 128 129 @SupportedAnnotationTypes("*") 130 private static class Proc extends AbstractProcessor { 131 final String m; 132 Proc(String m) { 133 this.m = m; 134 } 135 136 int count; 137 @Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { 138 if (roundEnv.processingOver() || count++ > 0) { 139 return false; 140 } 141 142 Filer filer = processingEnv.getFiler(); 143 Messager messager = processingEnv.getMessager(); 144 145 System.err.println("running Proc"); 146 try { 147 int len = filer.getResource(StandardLocation.SOURCE_OUTPUT, "p", "C.java").getCharContent(false).length(); 148 messager.printMessage(Kind.NOTE, "C.java: found previous content of length " + len); 149 } catch (FileNotFoundException | NoSuchFileException x) { 150 messager.printMessage(Kind.NOTE, "C.java: not previously there"); 151 } catch (IOException x) { 152 messager.printMessage(Kind.ERROR, "while reading: " + x); 153 } 154 155 try { 156 String body = "package p; public class C { public static void " + m + "() {} }"; 157 Writer w = filer.createSourceFile("p.C").openWriter(); 158 w.write(body); 159 w.close(); 160 messager.printMessage(Kind.NOTE, "C.java: wrote new content: " + body); 161 } catch (IOException x) { 162 messager.printMessage(Kind.ERROR, "while writing: " + x); 163 } 164 165 return true; 166 } 167 168 @Override 169 public SourceVersion getSupportedSourceVersion() { 170 return SourceVersion.latest(); 171 } 172 } 173} 174 175