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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.lang.ada
Subject: Re: Unchecked_Deallocation and Constraint_Error
Date: Tue, 19 Feb 2002 12:59:54 +0100
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Michal Nowikowski <godfryd@zamek.gda.pl> writes:

> I've got some code like that:
>
> ...
>   Cmd : Integer_Array_Access := new Integer_Array(1..1);
> ...
>    Free(Cmd);
>    Cmd(1) := 1;
> ...
>
> Program should throw exception Constraint_Error, but it only
> hangs at instruction Cmd(1) := 1; (but doesn't quit).

The Reference Manual is quite clear (section 13.11.2):

|                           _Erroneous Execution_
|
| 16. Evaluating a name that denotes a nonexistent object is erroneous.

You cannot expect that a Constraint_Error exception is raised in this
case, unless your compiler documentation guarantees this.