Newsgroups:	comp.os.msdos.djgpp
From:	Elliott Oti <oti AT phys DOT uu DOT nl>
Subject:	Re: passing arg 1 of 'free' ....
Sender:	usenet AT fys DOT ruu DOT nl (News system Tijgertje)
Message-ID:	<Pine.OSF.3.95.980619164139.5179G-100000@ruunf0.phys.uu.nl>
In-Reply-To:	<358A5A9F.E57B1F07@pac.nl>
Date:	Fri, 19 Jun 1998 14:50:00 GMT
References:	<358A5A9F DOT E57B1F07 AT pac DOT nl>
Mime-Version:	1.0
Organization:	Physics and Astronomy, University of Utrecht, The Netherlands
Lines:	29
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On Fri, 19 Jun 1998, Theo Landgraf wrote:

> i get this warning:
> 
> passing arg 1 of 'free' discards 'const' from pointer target type.
> 
> what does this mean?
> how can i solve it?


It means you are trying to delete (i.e. alter)  a pointer
after informing the compiler that you are going to do no such thing by
declaring the pointer as const.

const char *myptr; // means I am not going to alter myptr => myptr = const

free(myptr); // means please release the memory pointed to by myptr
             // and make myptr = NULL;

If you are going to alter myptr don't declare it as const char *, just as
char *.

Cheers,

  Elliott Oti
  kamer 104, tel (030-253) 2516 (RvG)    
  http://www.fys.ruu.nl/~oti

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