Internal error in size_binop

[Lars Brinkhoff]

kenner@vlsi1.ultra.nyu.edu (Richard Kenner) writes:
>     > -    (TO).var = size_binop (MINUS_EXPR, ssize_int (0), dec); \
>     > +    (TO).var = size_binop (MINUS_EXPR, size_int (0), dec); \
>     Kenner, it looks as if ssizetype doesn't have TYPE_IS_SIZETYPE set.
>     It would seem the proper fix is to rectify this in set_sizetype, no?
> I think it is set there.  Look at the loop.
> 
> The problem here seems more likely to be a type mismatch.  I have
> a vague recollection of running into this exact issue where some uses
> have the unsigned version.  This needs more work in the debugger to see
> where the wrong version is coming from.

Quite possibly it has something to do with the restriction that mode
alignments have to be powers of two, in stor-layout.c:get_mode_alignment().

When I removed this restriction (patch recently sent to gcc-patches),
the internal compiler error went away.

-- 
http://lars.nocrew.org/