Make sure that the body of the function created by calling Function is...

test/mjsunit/function.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 var f = Function();
 assertTrue(typeof f() == 'undefined');
-var f = new Function();
+f = new Function();
 assertTrue(typeof f() == 'undefined');
 
-var f = Function('return 1');
+f = Function('return 1');
 assertEquals(1, f());
-var f = new Function('return 1');
+f = new Function('return 1');
 assertEquals(1, f());
 
-var f = Function('return true');
+f = Function('return true');
 assertTrue(f());
-var f = new Function('return true');
+f = new Function('return true');
 assertTrue(f());
 
-var f = Function('x', 'return x')
-assertEquals(1, f(1));
-assertEquals('bar', f('bar'));
-assertTrue(typeof f() == 'undefined');
-var x = {};
-assertTrue(x === f(x));
-var f = new Function('x', 'return x')
+f = Function('x', 'return x');
 assertEquals(1, f(1));
 assertEquals('bar', f('bar'));
 assertTrue(typeof f() == 'undefined');
 var x = {};
 assertTrue(x === f(x));
 
-var f = Function('x', 'y', 'return x+y');
+f = Function('x', 'return x // comment');
+assertEquals(1, f(1));
+
+f = Function('return typeof anonymous');
+assertEquals('undefined', f());
+
+var anonymous = 42;
+f = Function('return anonymous;');
+assertEquals(42, f());
+
+f = new Function('x', 'return x')
+assertEquals(1, f(1));
+assertEquals('bar', f('bar'));
+assertTrue(typeof f() == 'undefined');
+var x = {};
+assertTrue(x === f(x));
+
+f = Function('x', 'y', 'return x+y');
 assertEquals(5, f(2, 3));
 assertEquals('foobar', f('foo', 'bar'));
-var f = new Function('x', 'y', 'return x+y');
+f = new Function('x', 'y', 'return x+y');
 assertEquals(5, f(2, 3));
 assertEquals('foobar', f('foo', 'bar'));
 
 var x = {}; x.toString = function() { return 'x'; };
 var y = {}; y.toString = function() { return 'y'; };
 var z = {}; z.toString = function() { return 'return x*y'; }
 var f = Function(x, y, z);
 assertEquals(25, f(5, 5));
 assertEquals(42, f(2, 21));
-var f = new Function(x, y, z);
+f = new Function(x, y, z);
 assertEquals(25, f(5, 5));
 assertEquals(42, f(2, 21));