Re: [libusb] [Moderate] New Ticket: Device is no more listed after some number of loop

[Nathan H. <hj...@me...>]

Something must be wrong with trac. This isn't showing up on www.libusb.org.

I ran your reproducer against the latest 1.0.16 release candidate and it also fails on the interation 21. I did some digging and I found a couple of leaks in 1.0.16-rc7 that are now fixed in 1.0.16-rc8 (one affects libusbx). Fixing those leaks did not have any affect on the reproducer. Instruments isn't showing any more leaks in libusb running the reproducer. I will continue digging but this might be a bug in IOKit and not libusb.

In the meantime I recommend not claiming/releasing the interface 64000 times ;).

Thanks for reporing this.

-Nathan

On Apr 25, 2013, at 10:04 AM, libusb Trac <tr...@li...> wrote:

> #0: Device is no more listed after some number of loop
> -----------------------------+----------------------------------------
> Reporter:  LudovicRousseau  |       Owner:
>     Type:  defect           |      Status:  new
> Milestone:                   |   Component:  libusb-1.0 Darwin backend
> Keywords:                   |  Blocked By:
>   Blocks:                   |
> -----------------------------+----------------------------------------
> The attached program will fail during the 21th loop. The device is no more
> listed by libusb.
> 
> Edit the source code of the sample and change VENDOR_ID/PRODUCT_ID to your
> own device.
> 
> This bug was initialy reported to libusbx at
> https://github.com/libusbx/libusbx/issues/112
> 
> -- 
> Ticket URL: <https://libusb.org/moderator?id=114>
> libusb <https://libusb.org/>
> C library for writing portable USB drivers in userspace