Re: gaim segfault while blocking someone

[Petr Janda <elekktretterr@xxxxxxxxxxxxxx>]

Ah thanks,

No I didnt play with the MALLOC_OPTIONS at all.  I just want a somewhat 
usable GUI :) It seems to be getting worse. KDE/Gnome are nearly always 
broken in pkgsrc. How can this free() problem be fixed?

Petr

Trevor Kendall wrote:
> 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