--- a/nashorn/src/jdk/nashorn/internal/parser/Parser.java	Tue Jul 02 13:50:19 2013 +0200
+++ b/nashorn/src/jdk/nashorn/internal/parser/Parser.java	Tue Jul 02 18:00:15 2013 +0530
@@ -535,15 +535,12 @@
             if (!(lhs instanceof AccessNode ||
                   lhs instanceof IndexNode ||
                   lhs instanceof IdentNode)) {
-                if (env._early_lvalue_error) {
-                    throw error(JSErrorType.REFERENCE_ERROR, AbstractParser.message("invalid.lvalue"), lhs.getToken());
-                }
-                return referenceError(lhs, rhs);
+                return referenceError(lhs, rhs, env._early_lvalue_error);
             }
 
             if (lhs instanceof IdentNode) {
                 if (!checkIdentLValue((IdentNode)lhs)) {
-                    return referenceError(lhs, rhs);
+                    return referenceError(lhs, rhs, false);
                 }
                 verifyStrictIdent((IdentNode)lhs, "assignment");
             }
@@ -2617,7 +2614,10 @@
         }
     }
 
-    private static RuntimeNode referenceError(final Node lhs, final Node rhs) {
+    private RuntimeNode referenceError(final Node lhs, final Node rhs, final boolean earlyError) {
+        if (earlyError) {
+            throw error(JSErrorType.REFERENCE_ERROR, AbstractParser.message("invalid.lvalue"), lhs.getToken());
+        }
         final ArrayList<Node> args = new ArrayList<>();
         args.add(lhs);
         if (rhs == null) {
@@ -2695,18 +2695,18 @@
             final Node lhs = leftHandSideExpression();
             // ++, -- without operand..
             if (lhs == null) {
-                // error would have been issued when looking for 'lhs'
-                return null;
+                throw error(AbstractParser.message("expected.lvalue", type.getNameOrType()));
             }
+
             if (!(lhs instanceof AccessNode ||
                   lhs instanceof IndexNode ||
                   lhs instanceof IdentNode)) {
-                return referenceError(lhs, null);
+                return referenceError(lhs, null, env._early_lvalue_error);
             }
 
             if (lhs instanceof IdentNode) {
                 if (!checkIdentLValue((IdentNode)lhs)) {
-                    return referenceError(lhs, null);
+                    return referenceError(lhs, null, false);
                 }
                 verifyStrictIdent((IdentNode)lhs, "operand for " + opType.getName() + " operator");
             }
@@ -2725,16 +2725,21 @@
             case DECPREFIX:
                 final TokenType opType = type;
                 final Node lhs = expression;
+                // ++, -- without operand..
+                if (lhs == null) {
+                    throw error(AbstractParser.message("expected.lvalue", type.getNameOrType()));
+                }
+
                 if (!(lhs instanceof AccessNode ||
                    lhs instanceof IndexNode ||
                    lhs instanceof IdentNode)) {
                     next();
-                    return referenceError(lhs, null);
+                    return referenceError(lhs, null, env._early_lvalue_error);
                 }
                 if (lhs instanceof IdentNode) {
                     if (!checkIdentLValue((IdentNode)lhs)) {
                         next();
-                        return referenceError(lhs, null);
+                        return referenceError(lhs, null, false);
                     }
                     verifyStrictIdent((IdentNode)lhs, "operand for " + opType.getName() + " operator");
                 }

--- a/nashorn/src/jdk/nashorn/internal/runtime/resources/Messages.properties	Tue Jul 02 13:50:19 2013 +0200
+++ b/nashorn/src/jdk/nashorn/internal/runtime/resources/Messages.properties	Tue Jul 02 18:00:15 2013 +0530
@@ -43,6 +43,7 @@
 parser.error.expected.stmt=Expected statement but found {0}
 parser.error.expected.comma=Expected comma but found {0}
 parser.error.expected.property.id=Expected property id but found {0}
+parser.error.expected.lvalue=Expected l-value but found {0}
 parser.error.expected=Expected {0} but found {1}
 parser.error.invalid.return=Invalid return statement
 parser.error.no.func.decl.here=Function declarations can only occur at program or function body level. You should use a function expression here instead.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8019553.js	Tue Jul 02 18:00:15 2013 +0530
@@ -0,0 +1,43 @@
+/*
+ * 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-8019553:  NPE on illegal l-value for increment and decrement
+ *
+ * @test
+ * @run
+ */
+
+function check(str) {
+    try {
+        eval(str);
+        fail("SyntaxError expected for: " + str);
+    } catch (e) {
+        print(e.toString().replace(/\\/g, '/'));
+    }
+}
+
+check("++ +3");
+check("++ -7");
+check("-- +2");
+check("-- -8");

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8019553.js.EXPECTED	Tue Jul 02 18:00:15 2013 +0530
@@ -0,0 +1,12 @@
+SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found +
+++ +3
+   ^
+SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found -
+++ -7
+   ^
+SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found +
+-- +2
+   ^
+SyntaxError: test/script/basic/JDK-8019553.js#33<eval>:1:3 Expected l-value but found -
+-- -8
+   ^

--- a/nashorn/test/script/basic/NASHORN-51.js	Tue Jul 02 13:50:19 2013 +0200
+++ b/nashorn/test/script/basic/NASHORN-51.js	Tue Jul 02 18:00:15 2013 +0530
@@ -35,28 +35,28 @@
         eval(literals[i] + "++");
         print("ERROR!! post increment : " + literals[i]);
     } catch (e) {
-        print(e);
+        print(e.toString().replace(/\\/g, '/'));
     }
 
     try {
         eval(literals[i] + "--");
         print("ERROR!! post decrement : " + literals[i]);
     } catch (e) {
-        print(e);
+        print(e.toString().replace(/\\/g, '/'));
     }
 
     try {
         eval("++" + literals[i]);
         print("ERROR!! pre increment : " + literals[i]);
     } catch (e) {
-        print(e);
+        print(e.toString().replace(/\\/g, '/'));
     }
 
     try {
         eval("--" + literals[i]);
         print("ERROR!! pre decrement : " + literals[i]);
     } catch (e) {
-        print(e);
+        print(e.toString().replace(/\\/g, '/'));
     }
 }
 

--- a/nashorn/test/script/basic/NASHORN-51.js.EXPECTED	Tue Jul 02 13:50:19 2013 +0200
+++ b/nashorn/test/script/basic/NASHORN-51.js.EXPECTED	Tue Jul 02 18:00:15 2013 +0530
@@ -1,24 +1,72 @@
-ReferenceError: "1" can not be used as the left-hand side of assignment
-ReferenceError: "1" can not be used as the left-hand side of assignment
-ReferenceError: "1" can not be used as the left-hand side of assignment
-ReferenceError: "1" can not be used as the left-hand side of assignment
-ReferenceError: "0" can not be used as the left-hand side of assignment
-ReferenceError: "0" can not be used as the left-hand side of assignment
-ReferenceError: "0" can not be used as the left-hand side of assignment
-ReferenceError: "0" can not be used as the left-hand side of assignment
-ReferenceError: "3.14" can not be used as the left-hand side of assignment
-ReferenceError: "3.14" can not be used as the left-hand side of assignment
-ReferenceError: "3.14" can not be used as the left-hand side of assignment
-ReferenceError: "3.14" can not be used as the left-hand side of assignment
-ReferenceError: "true" can not be used as the left-hand side of assignment
-ReferenceError: "true" can not be used as the left-hand side of assignment
-ReferenceError: "true" can not be used as the left-hand side of assignment
-ReferenceError: "true" can not be used as the left-hand side of assignment
-ReferenceError: "false" can not be used as the left-hand side of assignment
-ReferenceError: "false" can not be used as the left-hand side of assignment
-ReferenceError: "false" can not be used as the left-hand side of assignment
-ReferenceError: "false" can not be used as the left-hand side of assignment
-ReferenceError: "null" can not be used as the left-hand side of assignment
-ReferenceError: "null" can not be used as the left-hand side of assignment
-ReferenceError: "null" can not be used as the left-hand side of assignment
-ReferenceError: "null" can not be used as the left-hand side of assignment
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+1++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+1--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++1
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--1
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+0++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+0--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++0
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--0
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+3.14++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+3.14--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++3.14
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--3.14
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+true++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+true--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++true
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--true
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+false++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+false--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++false
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--false
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#35<eval>:1:0 Invalid left hand side for assignment
+null++
+^
+ReferenceError: test/script/basic/NASHORN-51.js#42<eval>:1:0 Invalid left hand side for assignment
+null--
+^
+ReferenceError: test/script/basic/NASHORN-51.js#49<eval>:1:2 Invalid left hand side for assignment
+++null
+  ^
+ReferenceError: test/script/basic/NASHORN-51.js#56<eval>:1:2 Invalid left hand side for assignment
+--null
+  ^

--- a/nashorn/test/script/error/NASHORN-57.js.EXPECTED	Tue Jul 02 13:50:19 2013 +0200
+++ b/nashorn/test/script/error/NASHORN-57.js.EXPECTED	Tue Jul 02 18:00:15 2013 +0530
@@ -1,3 +1,3 @@
-test/script/error/NASHORN-57.js:35:2 Expected statement but found ;
+test/script/error/NASHORN-57.js:35:2 Expected l-value but found ;
 ++;
   ^