diff -r 000000000000 -r 959103a6100f test/tools/javac/6403424/T6403424.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/6403424/T6403424.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2006, 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 6403424
+ * @summary JavacFileManager.inferBinaryName is not case-insensitive on Windows
+ */
+
+import java.io.*;
+import java.util.*;
+import com.sun.tools.javac.api.*;
+
+public class T6403424 {
+    public static void main(String[] args) {
+        File testSrc = new File(System.getProperty("test.src", "."));
+
+        File TMP = new File("TMP");
+        TMP.mkdirs();
+
+        // first, compile A to the TMP directory
+        File A_java = new File(testSrc, "A.java");
+        compile("-d", TMP.getPath(), A_java.getPath());
+
+        // now compile B, which references A,
+        // with TMP on classpath and tmp on bootclasspath
+        File B_java = new File(testSrc, "B.java");
+        compile("-classpath",  TMP.getPath(),
+                "-Xbootclasspath/p:" + TMP.getPath().toLowerCase(),
+                "-d", ".",
+                B_java.getPath());
+
+        // should not get NPE from compiler
+    }
+
+    private static void compile(String... args) {
+        System.err.println("compile: " + Arrays.asList(args));
+        JavacTool javac = JavacTool.create();
+
+        int rc = javac.run(null, null, null, args);
+        if (rc != 0)
+            throw new AssertionError("test compilation failed");
+    }
+}