--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/file/RelativePath.java	Tue Nov 18 15:25:18 2014 -0800
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/file/RelativePath.java	Wed Dec 03 14:25:46 2014 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 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
@@ -26,8 +26,13 @@
 package com.sun.tools.javac.file;
 
 import java.io.File;
+import java.nio.file.FileSystems;
+import java.nio.file.InvalidPathException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
+
 import javax.tools.JavaFileObject;
 
 /**
@@ -58,6 +63,16 @@
         return new File(directory, path.replace('/', File.separatorChar));
     }
 
+    public Path getFile(Path directory) throws /*unchecked*/ InvalidPathException {
+        if (directory == null) {
+            String sep = FileSystems.getDefault().getSeparator();
+            return Paths.get(path.replace("/", sep));
+        } else {
+            String sep = directory.getFileSystem().getSeparator();
+            return directory.resolve(path.replace("/", sep));
+        }
+    }
+
     public int compareTo(RelativePath other) {
         return path.compareTo(other.path);
     }