Re: bug in gnatgpl 2015?

[Simon Wright <simon@pushface.org>]

Leo Brewin <leo.brewin@internode.on.net> writes:

> I've run into what I think is a bug in gnatgpl 2015.
> I wonder if others could confirm the bug?
>
> I've tried to make the code as short as possible while still
> capturing the alleged bug.
>
> Using gnatgpl 2015 from Adacore, I get
>
>    gnatmake crash.adb
>
>       gcc -c crash.adb
>
>       raised CONSTRAINT_ERROR : erroneous memory access
>       gnatmake: "crash.adb" compilation error
>
> and on occassions a detailed report (too long to include here but will
> be sent to Adacore if need be).

Yes. Also, the reported point of error in the long report seems to vary
with the optimisation level.

>       head     : myArray1dIntg renames head_ptr.all;

The problem seems to go away if you eliminate this declaration, and use
head_ptr[.all] instead.