Re: g_free throwing an exception

[Graham Bloice <graham.bloice () trihedral com>]

On 5 November 2017 at 21:33, Pascal Quantin <pascal.quantin () gmail com>
wrote:

> Hi Paul,
>
> 2017-11-05 12:15 GMT+01:00 Paul Offord <Paul.Offord () advance7 com>:
>
> > Hi,
> >
> >
> >
> > I am working on a plugin dissector.  It works OK except when I change
> > profiles Wireshark throws an exception in code in proto.c as follows:
> >
> >
> >
> > static void
> >
> > free_deregistered_field (gpointer data, gpointer user_data _U_)
> >
> > {
> >
> >                header_field_info *hfi = (header_field_info *) data;
> >
> >                gint hf_id = hfi->id;
> >
> >
> >
> >                g_free((char *)hfi->name);      <== The exception occurs
> > on execution of this call
> >
> >
> >
> > The hfi structure looks valid and the hfi->name does point to a character
> > string.
> >
> >
> >
> > The only thing I can see that might be wrong is that hfi->name has a data
> > type of const char *
> >
> >
> >
> > How can I determine the cause of the exception?
>
> Usually this is a sign of an attempt to free a memory block that was not
> allocated with g_malloc. Is it a field from your plugin?
>
> BR,
> Pascal.

This might also be a case of mixed MSVCRT libraries.  If compiling with
VS2013 are you using VS2013 third party libraries?

-- 
Graham Bloice

___________________________________________________________________________
Sent via:    Wireshark-dev mailing list <wireshark-dev () wireshark org>
Archives:    https://www.wireshark.org/lists/wireshark-dev
Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev
             mailto:wireshark-dev-request () wireshark org?subject=unsubscribe