bugs on connect to Dive Rite Nitek Q

[Jef Driesen]

On 2014-08-25 11:03, Jef Driesen wrote:
> On 2014-08-25 07:10, Sincere CHEN wrote:
>> I have a computer Dive Rite Nitek Q. and I want to use surface to 
>> download
>> its dive log.
>> 
>> I run surface, and I use USB cable connect my Nitek Q to computer.
>> 
>> And then I select Nitek Q to “PC” model, at that time, the Nitek Q 
>> display
>> “USB communicating”
>> 
>> And I open surface, choose “import from dive computer”, and choose 
>> “Dive
>> Rite”, “Nitek Q”, “COM 28”.
>> 
>> When I click “OK”, it seems successful, since surface display my Nitek 
>> Q
>> serial number.
>> 
>> However, after some second, surface breakdown. My system display the
>> following information:
>> 
>>  [...]
>> 
>> My system is:
>> 
>> Windows 7 64bit
>> 
>> Does any guys meet this problem? How do you fix it?
> 
> First we need to find out whether this crash is in subsurface or
> libdivecomputer.

I received a memory dump from Chen, and the crash is caused by a buffer 
overflow in libdivecomputer. The buffer overflow is already fixed, but 
the problem that triggered it is still present. There is a dive where 
both the start and end address of the profile data are identical. So 
that's basically a zero-length dive, which is really weird. Still under 
investigation.

Jef