Re: Pointer arithmetic rules in the tree optimizers?

[Richard Henderson <rth at redhat dot com>]

On Thu, Aug 19, 2004 at 06:23:25PM -0700, James E Wilson wrote:
> This looks wrong to me.  I think the Fortran front end is just trying to 
> make the types match, without realizing that pointer arithmetic is 
> different.

Except, as discussed previously, pointer arithmetic *isn't* different
in trees, which is why it's slightly broken.  Law investigated several
potential solutions, all of which turned out to be painful.  Nothing
to date has been done.

> >     2. In cp/parser.c we are generating 'P = X + Y', where 'P' is of
> >        pointer type, '+' is of pointer type.  But *both* 'X' and 'Y'
> >        are plain integers.
> 
> Not enough info to go on, but it does look suspiciously wrong.

This indeed is incorrect.


r~