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NNTP-Posting-Date: Fri, 11 Feb 2005 14:34:34 -0600
From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: setting 'Size and unchecked conversion safe here?
References: <mailman.130.1108147882.527.comp.lang.ada@ada-france.org>
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Date: Fri, 11 Feb 2005 14:34:34 -0600
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Date: 2005-02-11T14:34:34-06:00
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>    for My_Access_To_Subprogram_Type'Size use 64;
>
>and GNAT warns me about 32 bits being unused. But Unchecked_Conversion
>between the access and the modular works fine. Now, is it working fine
>by chance or by language definition?
   ARM 13.9(5 .. 11) says
"If all of the following are true,
 ...
 S'Size = Target'Size
 ...
 Otherwise, the effect is implementation defined; ..."