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To: "Willem Jan Withagen" <wjw@withagen.nl>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Mon, 31 May 2004 22:41:57 +0200."
             <0be501c4474f$bb115400$471b3dd4@dual> 
Date: Mon, 31 May 2004 22:51:34 +0200
Message-ID: <2675.1086036694@critter.freebsd.dk>
cc: freebsd-current@freebsd.org
Subject: Re: Possible bug in malloc-code 
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In message <0be501c4474f$bb115400$471b3dd4@dual>, "Willem Jan Withagen" writes:
>
>        i =         11
>Alloc:  n =  335544320, ADR = 0x00000000485D7000
>Alloc:  n =  402653184, ADR = 0x000000005C5D7000
>Alloc:  n =  469762048, ADR = 0x00000000745D7000
>Alloc:  n =  536870912, ADR = 0xFFFFFFFF905D7000
>Free:   n =  536870912, ADR = 0xFFFFFFFF905D7000
>rMemoryDrv in free(): error: junk pointer, too high to make sense
>Abort (core dumped)

As for this part:  Does the program in fact have a prototype for
malloc(3) in sight ?  Can you try to explicitly add a wrong prototype
to see that it complains ?  Alternatively, #include <stdlib.h> to get
it a prototype.

I looked briefly at the source code of the test-program and while I am
in a position to say that it is doing something wrong with the casting,
it does look mightily bogus to me.

Poul-Henning

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.