# HG changeset patch
# User attila
# Date 1364980388 -7200
# Node ID 51da1afbab2622f4bd845b999cabb1535cb9f877
# Parent  e63b20d4f08a6080fb2bcb680683b85fe7ee97e0
8011362: Overloaded method resolution foiled by nulls
Reviewed-by: hannesw, sundar

diff -r e63b20d4f08a -r 51da1afbab26 src/jdk/internal/dynalink/beans/ClassString.java
--- a/src/jdk/internal/dynalink/beans/ClassString.java	Wed Apr 03 11:41:42 2013 +0530
+++ b/src/jdk/internal/dynalink/beans/ClassString.java	Wed Apr 03 11:13:08 2013 +0200
@@ -96,6 +96,11 @@
  * @author Attila Szegedi
  */
 final class ClassString {
+    /**
+     * An anonymous inner class used solely to represent the "type" of null values for method applicability checking.
+     */
+    static final Class<?> NULL_CLASS = (new Object() { /* Intentionally empty */ }).getClass();
+
     private final Class<?>[] classes;
     private int hashCode;
 
@@ -203,6 +208,9 @@
     }
 
     private static boolean canConvert(LinkerServices ls, Class<?> from, Class<?> to) {
+        if(from == NULL_CLASS) {
+            return !to.isPrimitive();
+        }
         return ls == null ? TypeUtilities.isMethodInvocationConvertible(from, to) : ls.canConvert(from, to);
     }
 }
diff -r e63b20d4f08a -r 51da1afbab26 src/jdk/internal/dynalink/beans/OverloadedMethod.java
--- a/src/jdk/internal/dynalink/beans/OverloadedMethod.java	Wed Apr 03 11:41:42 2013 +0530
+++ b/src/jdk/internal/dynalink/beans/OverloadedMethod.java	Wed Apr 03 11:13:08 2013 +0200
@@ -152,7 +152,7 @@
         final Class<?>[] argTypes = new Class[args.length];
         for(int i = 0; i < argTypes.length; ++i) {
             final Object arg = args[i];
-            argTypes[i] = arg == null ? callSiteType.parameterType(i) : arg.getClass();
+            argTypes[i] = arg == null ? ClassString.NULL_CLASS : arg.getClass();
         }
         final ClassString classString = new ClassString(argTypes);
         MethodHandle method = argTypesToMethods.get(classString);
diff -r e63b20d4f08a -r 51da1afbab26 test/script/basic/JDK-8011362.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/basic/JDK-8011362.js	Wed Apr 03 11:13:08 2013 +0200
@@ -0,0 +1,34 @@
+/*
+ * 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-8011362: Overloaded method resolution foiled by nulls
+ *
+ * @test
+ * @run
+ */
+
+var subject = new (Java.type("jdk.nashorn.test.models.Jdk8011362TestSubject"))
+
+print(subject.overloaded("", null))
+print(subject.overloaded(0, null))
diff -r e63b20d4f08a -r 51da1afbab26 test/script/basic/JDK-8011362.js.EXPECTED
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/basic/JDK-8011362.js.EXPECTED	Wed Apr 03 11:13:08 2013 +0200
@@ -0,0 +1,2 @@
+overloaded(Double, Double)
+overloaded(String, String)
diff -r e63b20d4f08a -r 51da1afbab26 test/src/jdk/nashorn/test/models/Jdk8011362TestSubject.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/src/jdk/nashorn/test/models/Jdk8011362TestSubject.java	Wed Apr 03 11:13:08 2013 +0200
@@ -0,0 +1,47 @@
+/*
+ * 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.nashorn.test.models;
+
+/**
+ * Test class used by JDK-8011362.js.
+ */
+public class Jdk8011362TestSubject {
+    // This is selected for overloaded("", null)
+    public String overloaded(String a, String b) {
+        return "overloaded(String, String)";
+    }
+
+    // This is selected for overloaded(0, null)
+    public String overloaded(Double a, Double b) {
+        return "overloaded(Double, Double)";
+    }
+
+    // This method is added to test that null will not match a primitive type, that is overloaded(0, null) will always
+    // select the (Double, Double) over (Double, double).
+    public String overloaded(Double a, double b) {
+        return "overloaded(Double, double)";
+    }
+}