Make dates default to the local timezone if none specified

test/test262/test262.status

 
 # Copyright 2011 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
@@ skipping 266 matching lines @@
   '15.2.3.12-1-4': [FAIL],
   '15.2.3.13-1': [FAIL],
   '15.2.3.13-1-1': [FAIL],
   '15.2.3.13-1-2': [FAIL],
   '15.2.3.13-1-3': [FAIL],
   '15.2.3.13-1-4': [FAIL],
 
   # ES6 RegExp test calls ToLength, not ToUint32
   'S15.10.6.2_A5_T3': [FAIL],
 
+  # ES6 says for dates to default to the local timezone if none is specified
+  '15.9.1.15-1': [FAIL],
+
   ######################## NEEDS INVESTIGATION ###########################
 
   # These test failures are specific to the intl402 suite and need investigation
   # to be either marked as bugs with issues filed for them or as deliberate
   # incompatibilities if the test cases turn out to be broken or ambiguous.
   '6.2.3': [FAIL],
   '9.2.1_2': [FAIL],
   '9.2.6_2': [FAIL],
   '10.1.1_a': [FAIL],
   '10.1.1_19_c': [PASS, FAIL, NO_VARIANTS],
@@ skipping 70 matching lines @@
 
   # BUG(3251225): Tests that timeout with --nocrankshaft.
   'S15.1.3.1_A2.4_T1': [SKIP],
   'S15.1.3.1_A2.5_T1': [SKIP],
   'S15.1.3.2_A2.4_T1': [SKIP],
   'S15.1.3.2_A2.5_T1': [SKIP],
   'S15.1.3.3_A2.3_T1': [SKIP],
   'S15.1.3.4_A2.3_T1': [SKIP],
 }],  # 'arch == arm or arch == mipsel or arch == mips or arch == arm64'
 ]