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Date: Thu, 31 Mar 2011 23:08:11 +0200
From: Georg Bauhaus <rm-host.bauhaus@maps.futureapps.de>
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Subject: Re: extended membership tests (branch)
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Date: 2011-03-31T23:08:11+02:00
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On 3/31/11 8:54 PM, Adam Beneschan wrote:

>>      for b in b1 in b1 .. b1 loop
>>          null;
>>      end loop;
>
> See AARM 3.5(3.a).  "for b in" has to be followed by either a subtype
> name, a 'Range attribute, or two "simple expressions" with .. between
> them.  In the last case, the bounds must be "simple expressions", not
> general expressions.  The syntax of simple_expressions doesn't allow
> membership tests (except in parentheses).  So the above is illegal.
> This rule has been there since Ada 95.

Thank you.  Now I have one more reason to like parentheses
around Boolean expressions outside conditionals. :-)