patch for -Wno-long-long and early GNAT compilers

[Zack Weinberg]

On Mon, Mar 18, 2002 at 11:05:16PM -0500, Robert Dewar wrote:
> <<There is still something I don't understand, though.  You've said over
> and over that you can't devote resources to making the Ada front end
> portable.  The implication is that it's too hard.  My experience over
> in the C front end indicates just the opposite; we don't have trouble
> maintaining buildability with ancient broken pre-standard compilers,
> and simultaneously making use of modern constructs.  Why is the Ada
> situation so different?
> >>
> 
> Are you talking about restricting GNAT to standard Ada?

No, only maintaining compatibility with previous versions of GNAT.  I
do see your point that making GNAT entirely standard Ada is not really
worth it given the expense and rarity of other Ada compilers.

(There *is* a reason why it would be desirable - to be able to verify
that GNAT-compiled-by-GNAT and GNAT-compiled-by-different-Ada generate
the same code for the same input.  People do do this with the C
compiler occasionally.)

zw