Message-ID:	<37446063.57ECA93A@rocketmail.com>
From:	Denis Lamarche <brainwav AT rocketmail DOT com>
Organization:	@Home Network
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Newsgroups:	comp.os.msdos.djgpp
Subject:	pointer/loop problem
Lines:	36
Date:	Thu, 20 May 1999 16:22:56 GMT
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

I am making a game with allegro:

typedef struct tagANIM
{
double clock;
unsigned char *next;
}ANIM;

ANIM *anims;

Then I load all the data into the anim structure (by malloc'ing ) its a
basic linked list.
ok then in some parts of my program I go like this:


ANIM *t;
t=(ANIM *)anims;

do
  {
  t->clock++;
  [alot of code here]
  }while(!ENDGAME);

Ok...heres the problem....everytime I run the program it gives me an
error.  I can trace it back to t->clock++, but if I remove the do/while
loop...it works perfectly. (but I need the loop).  If I fix one then the
error is then loacted at another point in the program, but in a sub that
has the same loop as above.

I think its whatever statement that is right after the DO that will
error.  if I put t->clock++ before the DO loop wvwrything is fine.   Has
anyone ever experienced this?


Denis Lamarche

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