Strict mode delete of unqualified identifier.

test/es5conform/es5conform.status

 # Copyright 2009 the V8 project authors. All rights reserved.
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 # 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
@@ skipping 341 matching lines @@
 chapter11/11.4/11.4.1/11.4.1-4.a-3-s: FAIL
 # delete operator throws TypeError when when deleting a non-configurable
 # data property in strict mode (Global.NaN)
 chapter11/11.4/11.4.1/11.4.1-4.a-4-s: FAIL
 # delete operator throws TypeError when deleting a non-configurable data
 # property in strict mode (Math.LN2)
 chapter11/11.4/11.4.1/11.4.1-4.a-9-s: FAIL
 
 # delete operator throws ReferenceError when deleting a direct reference
 # to a var in strict mode
+# Invalid test case. Test expects ReferenceError instead of SyntaxError.
+# http://es5conform.codeplex.com/workitem/29084
 chapter11/11.4/11.4.1/11.4.1-5-1-s: FAIL
 # delete operator throws ReferenceError when deleting a direct reference
 # to a function argument in strict mode
+# Invalid test case. Test expects ReferenceError instead of SyntaxError.
+# http://es5conform.codeplex.com/workitem/29084
 chapter11/11.4/11.4.1/11.4.1-5-2-s: FAIL
 # delete operator throws ReferenceError when deleting a direct reference
 # to a function name in strict mode
+# Invalid test case. Test expects ReferenceError instead of SyntaxError.
+# http://es5conform.codeplex.com/workitem/29084
 chapter11/11.4/11.4.1/11.4.1-5-3-s: FAIL
-# delete operator throws SyntaxError when deleting a direct reference
-# to a function argument(object) in strict mode
-chapter11/11.4/11.4.1/11.4.1-5-4-s: FAIL
 
 # eval - a function declaring a var named 'eval' throws EvalError in strict mode
 # Invalid test case. SyntaxError should be expected instead of EvalError.
 chapter12/12.2/12.2.1/12.2.1-1-s: FAIL
 # eval - a function assigning into 'eval' throws EvalError in strict mode
 # Invalid test case. SyntaxError should be expected instead of EvalError.
 chapter12/12.2/12.2.1/12.2.1-2-s: FAIL
 # eval - a function expr declaring a var named 'eval' throws EvalError
 # in strict mode
 # Invalid test case. SyntaxError should be expected instead of EvalError.
@@ skipping 101 matching lines @@
 chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-5-1-s: FAIL
 # Array.prototype.filter - thisArg not passed to strict callbackfn
 chapter15/15.4/15.4.4/15.4.4.20/15.4.4.20-5-1-s: FAIL
 # Array.prototype.reduce - null passed as thisValue to strict callbackfn
 chapter15/15.4/15.4.4/15.4.4.21/15.4.4.21-9-c-ii-4-s: FAIL
 
 [ $arch == mips ]
 
 # Skip all tests on MIPS.
 *: SKIP