https://issues.dlang.org/show_bug.cgi?id=21093

          Issue ID: 21093
           Summary: [ICE] AssertError@dmd/optimize.d(691): Assertion
                    failure
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: critical
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ibuclaw@gdcproject.org

module std.datetime.timezone;
import std;
class TimeZone
{
}
class LocalTime : TimeZone
{
    static immutable(LocalTime) opCall() { }
    override hasDST() { }
}

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