Re: [PATCH] remove the unsigned_type language hook

[kenner at vlsi1 dot ultra dot nyu dot edu (Richard Kenner)]

> Ada was the only front end that was coping nodes. Note sure why. I
> was unable to find any cases were this makes a difference. I don't
> know ada or the workings of the ada front end, so I might have
> missed something.

I'm not convinced this is required either and are, in general, in favor
of removing this sort of lang hook because the middle-end shouldn't be
doing this sort of thing, but this definitely requires testing.  I'd
think acats should be sufficient since modular types of this sort aren't
often used elsewhere.

Eric: I know that somebody recently did a gcov run of gnat1 over the entire
AdaCore test suite and acats.  Can you check if the copy_nodes in the
code in question are ever executed?