Re: Possible compiler bug with this simple program

[Adam Beneschan <adam@irvine.com>]

On Sep 2, 9:22 pm, Jerry <lancebo...@qwest.net> wrote:
> On Sep 1, 4:19 am, Jerry <lancebo...@qwest.net> wrote:
>
> > On Aug 29, 9:47 pm, Jerry <lancebo...@qwest.net> wrote:
>
> > > On Aug 29, 6:00 pm, "Randy Brukardt" <ra...@rrsoftware.com> wrote:
> > > > "Jerry" <lancebo...@qwest.net> wrote in message
>
> > > > >FWIW, in the _real_ application that I am working on, plmap is written
> > > > >in C (and accessed from my binding by an Import).
>
> > > > Interestingly, that's completely different. That *should* work on all Ada
> > > > compilers (note that the wording specifically excludes unconstrained
> > > > parameters for pragma Import).
> >    <snip>
> > > >                                          Randy.
>
> > > I'll see if I can make another example where plmap is a simple program
> > > in C that is Import-ed and see if it bombs on a 64-bit computer.
>
> > > Jerry
>
> > I've changed the simple example so that plmap is implemented in C.
>
> There haven't been any responses about the above post with mixed Ada-C
> code from this list but I have reports from the other developers on my
> project that it also runs OK on 32-bit systems but hangs on 64-bit
> systems.
>
> Unless somebody has further comments in a few days about why this
> isn't a bug, I'm going to report it as such.

Several of us have pointed out that it's a bad idea to use an
unconstrained array type (i.e. Real_Vector) as a parameter to an
imported routine (or a routine with convention C), but the above code
still did it.

                              -- Adam