--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/processing/rounds/OverwriteBetweenCompilations.java	Tue Apr 08 14:06:11 2014 +0200
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2014, 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 8038455
+ * @summary Verify that annotation processor can overwrite source and class files it generated
+ *          during previous compilations, and that the Symbols are updated appropriatelly.
+ * @library /tools/javac/lib/
+ * @clean *
+ * @build OverwriteBetweenCompilations ToolBox JavacTestingAbstractProcessor
+ * @compile/ref=OverwriteBetweenCompilations_1.out -processor OverwriteBetweenCompilations -Apass=1 -XDrawDiagnostics OverwriteBetweenCompilationsSource.java
+ * @compile/ref=OverwriteBetweenCompilations_2.out -processor OverwriteBetweenCompilations -Apass=2 -XDrawDiagnostics OverwriteBetweenCompilationsSource.java
+ * @compile/ref=OverwriteBetweenCompilations_3.out -processor OverwriteBetweenCompilations -Apass=3 -XDrawDiagnostics OverwriteBetweenCompilationsSource.java
+ */
+
+import java.io.*;
+import java.util.*;
+
+import javax.annotation.processing.*;
+import javax.lang.model.element.*;
+import javax.tools.*;
+
+import com.sun.tools.javac.processing.JavacProcessingEnvironment;
+import com.sun.tools.javac.processing.PrintingProcessor.PrintingElementVisitor;
+import com.sun.tools.javac.util.Log;
+import com.sun.tools.javac.util.Log.WriterKind;
+
+@SupportedOptions("pass")
+public class OverwriteBetweenCompilations extends JavacTestingAbstractProcessor {
+    int round = 1;
+    public boolean process(Set<? extends TypeElement> annotations,
+                           RoundEnvironment roundEnv) {
+        Log log = Log.instance(((JavacProcessingEnvironment) processingEnv).getContext());
+        PrintWriter pw = log.getWriter(WriterKind.NOTICE);
+
+        pw.println("round: " + round);
+
+        TypeElement generatedSource =
+                processingEnv.getElementUtils().getTypeElement("GeneratedSource");
+
+        if (generatedSource != null) {
+            new PrintingElementVisitor(pw, processingEnv.getElementUtils()).visit(generatedSource);
+            pw.flush();
+        }
+
+        TypeElement generatedClass =
+                processingEnv.getElementUtils().getTypeElement("GeneratedClass");
+
+        if (generatedClass != null) {
+            new PrintingElementVisitor(pw, processingEnv.getElementUtils()).visit(generatedClass);
+            pw.flush();
+        }
+
+        int pass = Integer.parseInt(processingEnv.getOptions().get("pass"));
+
+        if (round++ == 1) {
+            try (Writer out = filer.createSourceFile("GeneratedSource").openWriter()) {
+                String code = pass != 2 ? GENERATED_INIT : GENERATED_UPDATE;
+                code = code.replace("NAME", "GeneratedSource");
+                out.write(code);
+            } catch (IOException e) {
+                processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.toString());
+            }
+            try (OutputStream out = filer.createClassFile("GeneratedClass").openOutputStream()) {
+                String code = pass != 2 ? GENERATED_INIT : GENERATED_UPDATE;
+                code = code.replace("NAME", "GeneratedClass");
+                ToolBox.JavaToolArgs args =
+                        new ToolBox.JavaToolArgs().appendArgs("-parameters").setSources(code);
+                Map<String, byte[]> codeMap = ToolBox.compile(args);
+                out.write(codeMap.get("GeneratedClass"));
+            } catch (IOException | ToolBox.CommandExecutionException e) {
+                processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, e.toString());
+            }
+        }
+
+        return false;
+    }
+
+    //the initial generated class - "NAME" will be replaced with either "GeneratedSource" or
+    //"GeneratedClass" while generating the class:
+    private static final String GENERATED_INIT =
+            "@Deprecated\n" +
+            "public class NAME<T extends CharSequence> extends java.util.ArrayList<String>\n" +
+            "                                          implements Runnable {\n" +
+            "    public void test(int a) { }\n" +
+            "    public void run() { }\n" +
+            "}";
+
+    //generated class update- "NAME" will be replaced with either "GeneratedSource" or
+    //"GeneratedClass" while generating the class:
+    private static final String GENERATED_UPDATE =
+            "@javax.annotation.processing.SupportedAnnotationTypes(\"*\")\n" +
+            "public abstract class NAME<E extends Number> extends java.util.LinkedList<Number>" +
+            "                                             implements Runnable, CharSequence {\n" +
+            "    public void test(long a) { }\n" +
+            "}";
+}