From:	ao950 AT FreeNet DOT Carleton DOT CA (Paul Derbyshire)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: 255 error
Date:	22 Dec 1997 11:10:49 GMT
Organization:	The National Capital FreeNet
Lines:	29
Message-ID:	<67lhrp$art@freenet-news.carleton.ca>
References:	<349b49de DOT 19034473 AT news DOT earthlink DOT net>
Reply-To:	ao950 AT FreeNet DOT Carleton DOT CA (Paul Derbyshire)
NNTP-Posting-Host:	freenet5.carleton.ca
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Jaster (jaster32 AT hotmail DOT com) writes:
> My friend can compile his program ok in DJGPP but when he trys to run
> it says....
> 
> Program exit code: 255 (0x00ff)
> then in the message window it says:
> Call frame traceback:
> in function draw_sprite+25
> in function _ctrl_startup+138
> 
> This doesn't happen for me when I compile it and run it... anyone know
> what he's doing wrong?? I'm stumped.. I can send source code if you
> need to look at it...

You run it under Widnows which doesn't bomb on a NULL pointer, which is a
Windows bug. He runs under CWSDPMI which reports all errors.

The bug: you call draw_sprite in a g.d. constructor somewhere, before
you've even done any allegro_init()ing or set_gfx_mode()ing! As a result,
it is trying to draw that sprite directly to Never Never Land. <g>

(Otherwise, there's no way in hell to get to draw_sprite directly from
crt1_startup!)
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Paul Derbyshire ao950 AT freenet DOT carleton DOT ca pgd73 AT hotmail DOT com

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