--- a/langtools/src/share/classes/com/sun/tools/javac/file/CacheFSInfo.java	Wed Feb 09 18:26:08 2011 -0800
+++ b/langtools/src/share/classes/com/sun/tools/javac/file/CacheFSInfo.java	Thu Feb 10 14:24:26 2011 -0800
@@ -49,16 +49,13 @@
     public static void preRegister(final Context context) {
         context.put(FSInfo.class, new Context.Factory<FSInfo>() {
             public FSInfo make() {
-                if (singleton == null)
-                    singleton = new CacheFSInfo();
-                context.put(FSInfo.class, singleton);
-                return singleton;
+                FSInfo instance = new CacheFSInfo();
+                context.put(FSInfo.class, instance);
+                return instance;
             }
         });
     }
 
-    static CacheFSInfo singleton;
-
     public void clearCache() {
         cache.clear();
     }

--- a/langtools/src/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java	Wed Feb 09 18:26:08 2011 -0800
+++ b/langtools/src/share/classes/com/sun/tools/javac/processing/JavacProcessingEnvironment.java	Thu Feb 10 14:24:26 2011 -0800
@@ -55,6 +55,7 @@
 import com.sun.tools.javac.api.JavacTrees;
 import com.sun.tools.javac.code.*;
 import com.sun.tools.javac.code.Symbol.*;
+import com.sun.tools.javac.file.FSInfo;
 import com.sun.tools.javac.file.JavacFileManager;
 import com.sun.tools.javac.jvm.*;
 import com.sun.tools.javac.main.JavaCompiler;
@@ -1069,6 +1070,10 @@
             if (tl != null)
                 next.put(TaskListener.class, tl);
 
+            FSInfo fsInfo = context.get(FSInfo.class);
+            if (fsInfo != null)
+                next.put(FSInfo.class, fsInfo);
+
             JavaFileManager jfm = context.get(JavaFileManager.class);
             Assert.checkNonNull(jfm);
             next.put(JavaFileManager.class, jfm);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/file/T7018098.java	Thu Feb 10 14:24:26 2011 -0800
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2011, 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 7018098
+ * @summary CacheFSInfo persists too long
+ * @library ../lib
+ * @build JavacTestingAbstractProcessor T7018098
+ * @run main T7018098
+ */
+
+import java.io.*;
+import java.util.*;
+import javax.annotation.processing.RoundEnvironment;
+import javax.annotation.processing.SupportedOptions;
+import javax.lang.model.element.TypeElement;
+import javax.tools.Diagnostic;
+
+import com.sun.tools.javac.file.FSInfo;
+import com.sun.tools.javac.processing.JavacProcessingEnvironment;
+import com.sun.tools.javac.util.Context;
+
+@SupportedOptions("expect")
+public class T7018098 extends JavacTestingAbstractProcessor {
+    public static void main(String... args) throws Exception {
+        new T7018098().run();
+    }
+
+    static File testDir = new File("T7018098.dir");
+
+    void run() throws Exception {
+        String myName = T7018098.class.getSimpleName();
+        File testSrc = new File(System.getProperty("test.src"));
+        File file = new File(testSrc, myName + ".java");
+
+        _assert(!testDir.exists());
+
+        compile(
+            "-proc:only",
+            "-processor", myName,
+            "-Aexpect=false",
+            file.getPath());
+
+        testDir.mkdirs();
+        _assert(testDir.exists());
+
+        compile(
+            "-proc:only",
+            "-processor", myName,
+            "-Aexpect=true",
+            file.getPath());
+    }
+
+    void _assert(boolean cond) {
+        if (!cond)
+            throw new AssertionError();
+    }
+
+    void compile(String... args) throws Exception {
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        int rc = com.sun.tools.javac.Main.compile(args, pw);
+        pw.close();
+        String out = sw.toString();
+        if (!out.isEmpty())
+            System.err.println(out);
+        if (rc != 0)
+            throw new Exception("compilation failed unexpectedly: rc=" + rc);
+    }
+
+    //---------------
+
+    @Override
+    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+        Context context = ((JavacProcessingEnvironment) processingEnv).getContext();
+        FSInfo fsInfo = context.get(FSInfo.class);
+
+        round++;
+        if (round == 1) {
+            boolean expect = Boolean.valueOf(options.get("expect"));
+            checkEqual("cache result", fsInfo.isDirectory(testDir), expect);
+            initialFSInfo = fsInfo;
+        } else {
+            checkEqual("fsInfo", fsInfo, initialFSInfo);
+        }
+
+        return true;
+    }
+
+    <T> void checkEqual(String label, T actual, T expected) {
+        if (actual != expected)
+            messager.printMessage(Diagnostic.Kind.ERROR,
+                    "Unexpected value for " + label
+                    + "; expected: " + expected
+                    + "; found: " + actual);
+    }
+
+    int round = 0;
+    FSInfo initialFSInfo;
+}