| Index: sdk/lib/core/date.dart
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| diff --git a/sdk/lib/core/date.dart b/sdk/lib/core/date.dart
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| index 9f4e9178a565fb30da6c909050b8ef83f366910e..3ce0b0786bd5337fb21b24eea7b357038234a894 100644
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| --- a/sdk/lib/core/date.dart
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| +++ b/sdk/lib/core/date.dart
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| @@ -257,7 +257,7 @@ class _DateImpl implements Date {
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|      //    - "20120227"
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|      //    - "2012-02-27T14Z"
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|      //    - "-123450101 00:00:00 Z"  // In the year -12345.
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| -    final RegExp re = const RegExp(
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| +    final RegExp re = new RegExp(
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|          r'^([+-]?\d?\d\d\d\d)-?(\d\d)-?(\d\d)'  // The day part.
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|          r'(?:[ T](\d\d)(?::?(\d\d)(?::?(\d\d)(.\d{1,6})?)?)? ?([zZ])?)?$');
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|      Match match = re.firstMatch(formattedString);
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| 
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