internal_reference_types

[Eric Botcazou]

> What (Ada!) targets would it make a difference on?  As it affects TYPE_SIZE
> it also affects layout (obviously), so I wonder how this can be an
> optimization (I assume it was intended to be one - likely for Adas fat
> pointer representation?)

Only Richard K. might remember the details.  Possibly for IA-64/HP-UX -milp32.
In any case, having a different representation for pointers and references is 
a recipe for annoying issues like this, so removing the kludge is OK with me.

-- 
Eric Botcazou