https://issues.dlang.org/show_bug.cgi?id=19898

          Issue ID: 19898
           Summary: ICE: in sizemask at dmd/mtype.d(2563): 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

void f (__vector(int[4]) n)
{
  foreach (i; 0..n)
    n;
}

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