diff -r aceae9ceebbe -r c2d9303c3477 test/tools/javac/api/6437999/T6437999.java
--- a/test/tools/javac/api/6437999/T6437999.java	Tue Jun 25 20:08:52 2013 +0400
+++ b/test/tools/javac/api/6437999/T6437999.java	Wed Jun 26 09:54:46 2013 -0700
@@ -33,11 +33,28 @@
  */
 
 import java.io.File;
+import java.io.IOException;
 import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 import javax.tools.*;
+import static java.nio.file.StandardOpenOption.*;
 
 public class T6437999 extends ToolTester {
+    final File testFile = new File("Utf8.java");
+    T6437999() throws IOException {
+        createTestFile();
+    }
+    final void createTestFile() throws IOException {
+        List<String> scratch = new ArrayList<>();
+        scratch.add("// @author Peter von der Ah" + (char) 0xe9);
+        scratch.add("class Utf8{}");
+        Files.write(testFile.toPath(), scratch, Charset.forName("UTF-8"),
+                CREATE, TRUNCATE_EXISTING);
+    }
+
     static class MyDiagnosticListener implements DiagnosticListener<JavaFileObject> {
         boolean error = false;
         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
@@ -55,7 +72,7 @@
         dl.error = false;
         fm = getFileManager(tool, dl, Charset.forName("ASCII"));
         fm.handleOption("-source", sourceLevel.iterator());
-        files = fm.getJavaFileObjects(new File(test_src, "Utf8.java"));
+        files = fm.getJavaFileObjects(testFile);
         tool.getTask(null, fm, null, null, null, files).call();
         if (!dl.error)
             throw new AssertionError("No error in ASCII mode");
@@ -63,12 +80,12 @@
         dl.error = false;
         fm = getFileManager(tool, dl, Charset.forName("UTF-8"));
         fm.handleOption("-source", sourceLevel.iterator());
-        files = fm.getJavaFileObjects(new File(test_src, "Utf8.java"));
+        files = fm.getJavaFileObjects(testFile);
         task = tool.getTask(null, fm, null, null, null, files);
         if (dl.error)
             throw new AssertionError("Error in UTF-8 mode");
     }
-    public static void main(String... args) {
+    public static void main(String... args) throws IOException {
         new T6437999().test(args);
     }
 }