[reSIProcate] SipStack shutdown crash

[Daniel Pocock]

Daniel Pocock wrote:

>I've been evaluating some reSIProcate based code on the Windows platform.
>
>When I delete the SipStack object (after DUM is shutdown and deleted 
>properly), the Ares code complains about an invalid pointer.  This 
>always happens at the same place.
>
>Note that this only seems to occur with the release version and not the 
>debug build.
>  
>

I notice in the more recent ares code that they initialise all the 
pointers to NULL at init time:

    
http://cool.haxx.se/cvs.cgi/curl/ares/ares_init.c?rev=1.38&content-type=text/vnd.viewcvs-markup

but the version of ares in reSIProcate doesn't have those changes. 


>Does anyone have any ideas?
>
>	ntdll.dll!7c901230() 	
>  
>
>>>	ntdll.dll!7c96c943() 	
>>>	ntdll.dll!7c96cd80() 	
>>>	ntdll.dll!7c960af8() 	
>>>	ntdll.dll!7c960bcc() 	
>>>	kernel32.dll!7c85e9cf() 	
>>>	msvcr71d.dll!_CrtIsValidHeapPointer(const void *
>>>pUserData=0x007b5e30)  Line 1807	C
>>>	msvcr71d.dll!_free_dbg_lk(void * pUserData=0x007b5e30, int
>>>nBlockUse=0x00000001)  Line 1132 + 0x9	C
>>>	msvcr71d.dll!_free_dbg(void * pUserData=0x007b5e30, int
>>>nBlockUse=0x00000001)  Line 1070 + 0xd	C
>>>	msvcr71d.dll!free(void * pUserData=0x007b5e30)  Line 1025 + 0xb
>>>C
>>>	gencc_sip.dll!_ares_destroy_internal()  + 0x69	C
>>>	gencc_sip.dll!_ares_destroy_suppress_callbacks()  + 0xc	C
>>>	gencc_sip.dll!resip::AresDns::~AresDns()  Line 114 + 0xf	
>>>	gencc_sip.dll!resip::AresDns::`scalar deleting destructor'()  +
>>>0x8	
>>>	gencc_sip.dll!resip::DnsStub::~DnsStub()  Line 76	
>>>	gencc_sip.dll!resip::DnsStub::`vector deleting destructor'()  +
>>>0x8	
>>>	gencc_sip.dll!resip::SipStack::~SipStack()  + 0x98	C++
>>>	gencc_sip.dll!resip::SipStack::`scalar deleting destructor'()  +
>>>0x8	C++
>>>      
>>>
>
>
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