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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Turning off "Unit xxx not referenced" warnings?
Date: 30 Oct 2004 15:51:22 +0100
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Date: 2004-10-30T15:51:22+01:00
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"Martin Dowie" <martin.dowie@btopenworld.com> writes:

> "Nick Roberts" <nick.roberts@acm.org> wrote in message 
> news:2uf20fF2au91oU1@uni-berlin.de...
> >> For GNAT,
> >>
> >> pragma Warnings (Off, <unit_name>);
> >>
> >> see section "1. Implementation Defined Pragmas" of the GNAT Reference
> >> Manual.
> >
> > Also see pragma Unreferenced ibid.
> 
> Yes, I've noticed that newer code coming out of ACT uses "Warnings (Off" 
> rather than "Unreferenced" - no idea why... 

I thought Unreferenced (X) was newer than Warnings (Off, X)?

The good thing about Unreferenced is that you get a warning if you do
access the thing.

The slightly confusing thing is that it sort-of means "read": eg,
declaring a BC lock, which locks during elaboration,

  L : Lock (Some_Semaphore'Access);
  pragma Unreferenced (L);

-- 
Simon Wright                               100% Ada, no bugs.