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From: Jacob Sparre Andersen <sparre@nbi.dk>
Newsgroups: comp.lang.ada
Subject: Re: Help with constructing an Ada Shell
Date: Fri, 30 Oct 2015 09:37:44 +0100
Organization: JSA Research & Innovation
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Date: 2015-10-30T09:37:44+01:00
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annihilan@gmail.com writes:

>    Input : aliased String := (1 .. 255 => ' ');

> 	 IO.Get_Line(Input, Last);

>       Spawn (Program_Name => Input, -- truncate strings or Input(Input'First..Last)??

> No matter what command is passed at the prompt, a return value of 1 is
> given. 

Have you tried passing a command whose name is exactly 255 characters
long?

> I would massively appreciate any help that could be given to me. I
> don't really have any clue at all what's going on.

"Global" variables, which aren't really about maintaining state, are
generally a bad idea.

Why don't you give Execute_System the profile:

   function Execute_System (Program : in String) return Integer;

If GNAT.OS_Lib.Spawn wants access types as parameters, you can always
allocate a copy on the heap inside Execute_System and pass the access to
the copy to GNAT.OS_Lib.Spawn.

Greetings,

Jacob
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