Wireshark · Wireshark-dev: Re: [Wireshark-dev] Crash when using adns on win32

[Graham Bloice <graham.bloice@xxxxxxxxxxxxx>]

Stig Bjørlykke wrote:
> Hi.
>
> I get a crash in the latest svn when using ADNS on win32 compiled with  
> MSVC2005EE.  In host_name_lookup_process() the adns_check() returns a  
> adns_answer struct with some data in an union.  The code using the  
> data looks like this (line 2197):
>
>   if (ans->status == adns_s_ok) {
>     add_ipv4_name(almsg->ip4_addr, *ans->rrs.str);
>   }
>
> In my debugger *ans->rrs.str is an invalid pointer, but ans->rrs.bytes  
> points to a valid string.  The invalid pointer causes wireshark to  
> crash.
>
> I do not get this crash using 0.99.8pre1 from the wireshark website.
>
> Any ideas?
>
>
>   
This is very symptomatic of using an original adns dll compiled with MS 
VC 6 against a later C runtime.  Are you sure you've compiled a new 
dll?  Did you do a "setup" and get the old one back?

See http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2075  for more 
info.  Note that I haven't responded to Steven's request.  I'll try to 
do so tomorrow.

Graham Bloice