Re: [Libusb-win32-devel] usb_os_determine_children

[Dan E. <Dan...@ne...>]

Thankyou very much for your swift response.

Dan.

Stephan Meyer wrote:
> I fixed the memory leak in usb_os_determine_children() (file
> windows.c) and another one in usb_find_busses() (file usb.c) by
> including the latest files from the (linux-) libusb project. =20
>=20
> The new files are in the CVS.
>=20
> I tested the functions with the following code:
>=20
> int main(void)
> {
>   usb_init();
>   usb_set_debug(255);
>=20
>   while(1) {
>     usb_find_busses();
>     usb_find_devices();
>   }
> }
>=20
> Everything seems to be ok now.
>=20
> Stephan
>=20
>=20
>> Hi,
>>=20
>> We've detected a memory leak which seems to have crept into libusb
>> not long ago. It looks like it's in usb_os_determine_children which
>> used to have an empty body, but now does some mallocs. I can't see
>> where these are ever freed, so if you call usb_find_devices more
>> than once you get a memory leak. Is this correct?
>>=20
>> I also can't see how buses are successfully freed upon discovery that
>> they are no longer there, but this is a very rare occurrence, whereas
>> scanning the bus for new devices happens quite often.
>>=20
>> Dan Ellis
>>=20
>>
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>=20
>=20
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