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From: Jacob Sparre Andersen <sparre@nbi.dk>
Newsgroups: comp.lang.ada
Subject: Re: Arm - ravenscar - exceptions - last chance handler
Date: Sat, 30 May 2015 16:53:48 +0200
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2015-05-30T16:53:48+02:00
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jan.de.kruyf@gmail.com writes:

>    procedure Raise_Exception (E : Exception_Id; Message : String := "") is
>       pragma Unreferenced (E);
>
>       procedure Last_Chance_Handler (Msg : System.Address; Line : Integer);
>       pragma Import (C, Last_Chance_Handler, "__gnat_last_chance_handler");
>       pragma No_Return (Last_Chance_Handler);
>
>    begin
>       Last_Chance_Handler (Message'Address, 0);
>    end Raise_Exception;

> How is last chance handler going to know the --length-- of the
> message?

Because it knows where 'First and 'Last of a string are stored
relatively to it's 'Address.

Greetings,

Jacob
-- 
"It is very easy to get ridiculously confused about the
 tenses of time travel, but most things can be resolved
 by a sufficiently large ego."