--- a/nashorn/src/jdk/nashorn/internal/parser/Parser.java	Fri Jun 28 19:36:26 2013 +0530
+++ b/nashorn/src/jdk/nashorn/internal/parser/Parser.java	Mon Jul 01 12:38:01 2013 +0530
@@ -767,8 +767,6 @@
         case LBRACE:
             block();
             break;
-        case RBRACE:
-            break;
         case VAR:
             variableStatement(true);
             break;
@@ -1267,6 +1265,7 @@
         case RBRACE:
         case SEMICOLON:
         case EOL:
+        case EOF:
             break;
 
         default:
@@ -1314,6 +1313,7 @@
         case RBRACE:
         case SEMICOLON:
         case EOL:
+        case EOF:
             break;
 
         default:
@@ -1368,6 +1368,7 @@
         case RBRACE:
         case SEMICOLON:
         case EOL:
+        case EOF:
             break;
 
         default:
@@ -1403,6 +1404,7 @@
         case RBRACE:
         case SEMICOLON:
         case EOL:
+        case EOF:
             break;
 
         default:
@@ -2566,7 +2568,7 @@
                  */
 
                 // just expression as function body
-                final Node expr = expression();
+                final Node expr = assignmentExpression(true);
                 assert lc.getCurrentBlock() == lc.getFunctionBody(functionNode);
                 // create a return statement - this creates code in itself and does not need to be
                 // wrapped into an ExecuteNode

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8019473.js	Mon Jul 01 12:38:01 2013 +0530
@@ -0,0 +1,62 @@
+/*
+ * 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-8019473: Parser issues related to functions and blocks
+ *
+ * @test
+ * @run
+ */
+
+function checkNoError(code) {
+    try {
+        Function(code);
+    } catch (e) {
+        print("no error expected for: " + code + " , got " + e);
+    }
+}
+
+// implicit newlines at EOF should be accepted
+checkNoError("for(;;) continue")
+checkNoError("return")
+checkNoError("yield")
+checkNoError("for(;;) break")
+
+function checkError(code) {
+    try {
+        eval(code);
+        print("SyntaxError expected for: " + code);
+    } catch (e) {
+        if (! (e instanceof SyntaxError)) {
+            fail("SyntaxError expected, got " + e);
+        }
+    }
+}
+
+checkError("function f() { case0: }");
+checkError("function f() { if(0) }");
+checkError("function f() { if(0); else }");
+checkError("function f() { while(0) }");
+
+// comma expression as closure expression
+checkError("function sq(x) x, x*x");