--- a/src/jdk/nashorn/internal/objects/NativeError.java	Mon Jul 01 14:15:07 2013 +0530
+++ b/src/jdk/nashorn/internal/objects/NativeError.java	Mon Jul 01 17:21:09 2013 +0530
@@ -30,10 +30,7 @@
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
-import java.util.ArrayList;
-import java.util.List;
 import jdk.nashorn.api.scripting.NashornException;
-import jdk.nashorn.internal.codegen.CompilerConstants;
 import jdk.nashorn.internal.lookup.MethodHandleFactory;
 import jdk.nashorn.internal.objects.annotations.Attribute;
 import jdk.nashorn.internal.objects.annotations.Constructor;
@@ -41,7 +38,6 @@
 import jdk.nashorn.internal.objects.annotations.Property;
 import jdk.nashorn.internal.objects.annotations.ScriptClass;
 import jdk.nashorn.internal.objects.annotations.Where;
-import jdk.nashorn.internal.runtime.ECMAErrors;
 import jdk.nashorn.internal.runtime.ECMAException;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.PropertyMap;
@@ -123,6 +119,7 @@
      * Nashorn extension: Error.captureStackTrace. Capture stack trace at the point of call into the Error object provided.
      *
      * @param self self reference
+     * @return undefined
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
     public static Object captureStackTrace(final Object self, final Object errorObj) {

--- a/src/jdk/nashorn/internal/runtime/ECMAException.java	Mon Jul 01 14:15:07 2013 +0530
+++ b/src/jdk/nashorn/internal/runtime/ECMAException.java	Mon Jul 01 17:21:09 2013 +0530
@@ -51,7 +51,7 @@
     /** Field handle to the{@link ECMAException#thrown} field, so that it can be accessed from generated code */
     public static final FieldAccess THROWN = virtualField(ECMAException.class, "thrown", Object.class);
 
-    public static final String EXCEPTION_PROPERTY = "nashornException";
+    private static final String EXCEPTION_PROPERTY = "nashornException";
 
     /** Object thrown. */
     public final Object thrown;

--- a/src/jdk/nashorn/internal/runtime/JSType.java	Mon Jul 01 14:15:07 2013 +0530
+++ b/src/jdk/nashorn/internal/runtime/JSType.java	Mon Jul 01 17:21:09 2013 +0530
@@ -911,7 +911,7 @@
 
         for (int i = start; i < length ; i++) {
             if (digit(chars[i], radix) == -1) {
-                break;
+                return Double.NaN;
             }
             pos++;
         }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/basic/JDK-8019482.js	Mon Jul 01 17:21:09 2013 +0530
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2010, 2013, 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.
+ */
+
+/**
+ * JDK-8019482: Number("0x0.0p0") should evaluate to NaN
+ *
+ * @test
+ * @run
+ */
+
+function checkHexLiteral(str) {
+    if (! isNaN(Number(str))) {
+        fail("Number(" + str + ") is not NaN");
+    }
+}
+
+checkHexLiteral("0x0.0");
+checkHexLiteral("0x0.0p");
+checkHexLiteral("0x12tu");
+checkHexLiteral("0x12.2e22");
+checkHexLiteral("0xtu");