Re: gaim segfault while blocking someone

["Trevor Kendall" <trevorjkendall@xxxxxxxxx>]

On 28/08/06, Petr Janda <elekktretterr@xxxxxxxxxxxxxx> wrote:
> When I try to block someone in gaim, i get this error:
>
> *gaim in free(): error: modified (page-) pointerAbort*
>
> The user is blocked, but everytime i would log in into msn it would
> segfault with the same error.
>
> Can anyone explain to me what this error means and whats the cause of it?
>
> Petr

That looks like something this would cause:

char *test;
test = (char *)malloc(getpagesize());

test = test + 1;

free(test);

I thought the DragonFly malloc implementation was supposed to only
crash on things like that if A was set in MALLOC_OPTIONS. If this is
the case then the man page needs to be updated because I don't find
any mention of crashing being the default behaviour. I, however, don't
find any mention of not crashing being the default behaviour either.
(You haven't set MALLOC_OPTIONS have you?)

As for what the error means, this is copied straight from the man page:

    modified (chunk-/page-) pointer  The pointer passed to free() or
    realloc() has been modified.

Trevor