https://issues.dlang.org/show_bug.cgi?id=12843

          Issue ID: 12843
           Summary: Unit tests fail when GC is compiled with SENTINEL
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

See https://github.com/D-Programming-Language/druntime/pull/819 for discussion.

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