Re: Studying and Maintaining GNAT, Is There Any Interest in a New Group?

[Shark8 <onewingedshark@gmail.com>]

On Monday, August 27, 2018 at 10:54:48 AM UTC-6, Bill Findlay wrote:
> On 27 Aug 2018, Simon Wright wrote:
> 
> > Luke A. Guest writes:
> >
> > > patrick wrote:
> > >
> > > > However I am discouraged with what you are saying about the bugs
> > > > being on the compiler side and not so much in the RTS.
> > >
> > > It愀 more the bugs are in the Ada front end, not the GCC backend,
> > > which is the codegen.
> >
> > There are also bugs in the front/back end interface, which can be
> > triggered by unusual Ada usages. But, (a) unusual, (b) when found, fixed
> > quickly (IME).
> >
> > And there are bugs in the backend; e.g. currently some problems with
> > LTO/Darwin.
> 
> Could you say more about that, Simon?
> It might explain some difficulties I have been experiencing.
> 
> -- 
> Bill Findlay

Well, one bug that seems to recur frequently is mishandling of RENAMES, and not obscure renamings either, things like attribute renaming:
  Length : Natural renames Some_Array'Length;
(Though they might have special-cased this particular one.)