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From: Mats Weber <Mats.Weber@elca-matrix.ch>
Subject: Re: help with pointerproblem.
Date: 1998/09/11
Message-ID: <35F91FB9.A07A0CF9@elca-matrix.ch>#1/1
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Reply-To: Mats.Weber@elca-matrix.ch
Newsgroups: comp.lang.ada
Date: 1998-09-11T00:00:00+00:00
List-Id: <comp.lang.ada>

Wayne Magor wrote:

> Since VertexArray is unconstrained, there will have to be a descriptor
> someplace.  It's likely the pointer points to the descriptor instead
> of the data.  I'd prefer to take the 'address of element zero of the
> array.  Seems to me that's more likely to work across nearly all
> platforms.  Like this:
> 
>   return GLPointer (ToGlPointerPackage.To_Pointer (vPtr(0)'Address));

This (taking the address of the first element instead of the address of the
array) is a hack that is not necessary anymore with Ada 95, because the RM now
says it has to be the same.

   return GLPointer (ToGlPointerPackage.To_Pointer (vPtr'Address));

is just fine.