Path: chuka.playstation.co.uk!news
From: "Mario Wynands" <mariow@ihug.co.nz>
Newsgroups: scea.yaroze.programming.codewarrior,scee.yaroze.programming.codewarrior
Subject: Disappearing variables
Date: Sun, 28 Dec 1997 19:08:56 +1300
Organization: PlayStation Net Yaroze (SCEE)
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Xref: chuka.playstation.co.uk scea.yaroze.programming.codewarrior:264 scee.yaroze.programming.codewarrior:124

I seem to have a problem with Codewarrior when using external variables.

Consider the following example

// ---------------------------------------------------------
// ENTITY.C file

int     num_entities;

u_long* ReadEntities(u_long *addr)
{
    /*
        some code
    */

     num_entities = 5;

    /*
        some more code
    */
}

// ---------------------------------------------------------


num_entities is initialised externally and set in ReadEntities.

After the assignment statement in ReadEntities num_entities holds the value
of 5 for the remainder of the function and in any sub functions that
ReadEntities might call.

Outside of the ReadEntities function the num_entities value becomes garbage.

External variables would appear to not be persistant on occasion (it does
work in some cases).


I have tried all sorts of different declaration methods including various
creative extern usages, but to no avail.

Any ideas anyone?


Mario