-- strict constructor version:
{-# INLINE sL #-}
sL :: SrcSpan -> a -> Located a
-sL span a = span `seq` L span a
+sL span a = span `seq` a `seq` L span a
-- Make a source location for the file. We're a bit lazy here and just
-- make a point SrcSpan at line 1, column 0. Strictly speaking we should