Re: Possible bug in malloc-code

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 05/31/04

  • Next message: Willem Jan Withagen: "Re: Possible bug in malloc-code" 
    To: "Willem Jan Withagen" <wjw@withagen.nl>
Date: Mon, 31 May 2004 22:51:34 +0200

    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.
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