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From: Phil Thornley <phil.jpthornley@googlemail.com>
Newsgroups: comp.lang.ada
Subject: 
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Date: Tue, 25 May 2010 16:18:24 -0700 (PDT)
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On 25 May, 21:05, Yannick Duch=EAne (Hibou57) <yannick_duch...@yahoo.fr>
wrote:

[...]
> This latter one pass syntax check without any error message (just two =A0
> obvious warnings).
>
[...]

> Eh, I'm dreaming, I have the result I am reporting.
[...]

> I was doing a syntax check only (I feel it is important to state this, as=
 =A0
> you come with an example using Derives clauses).

AAAAHHHHHHHH - I hadn't noticed that your OP said "syntax check" -
that is why you are not getting an error on the first example - it is
not a syntax error. (Presumeably because the preceeding declaration
*might* be an embedded package - which is allowed by the language
definition even if it's not implemented by the Examiner.)

(But it is a semantic error, as shown by my earlier response.)

Cheers,

Phil