On Mon, Feb 07, 2005 at 11:01:00PM -0500, Brian Ristuccia wrote: > I'm seeing a problem similar to what Christophe reported back in April of > 2002. My programs like libptp and gphoto2 segfault when iterating over the > usb_busses linked list. Looking at it with gdb, > usb_busses->config->interface eventually winds up null and things blow up. I suppose you mean dev->config[i]->interface[j] there? There is multiple configurations possible as well as multiple interfaces. You can get the number of configurations in dev->descriptor.bNumConfigurations and the number of interfaces for a configuration in dev->config[i].bNumInterfaces. I think it is not impossible to have one of this number equal to 0.
> I've been able to reproduce this problem with libusb-0.1.8 and 0.1.9. Unlike > Christoph's case, rebuilding libusb from source on the same machine where > I'm building libptp or gphoto2 doesn't fix it. Does the problem seems to be related to the presence of a specific device on the USB bus? > Oddly enough, the testlibusb program included with libusb seems to work and > it's looking at the same structure. Do you get also the problem with 'lsusb -v' (for the usbutils packages). As it cycle through all possible values of the libusb structures, it think it is a good test. Bye, Aurelien -- .''`. Aurelien Jarno GPG: 1024D/F1BCDB73 : :' : Debian GNU/Linux developer | Electrical Engineer `. `' [EMAIL PROTECTED] | [EMAIL PROTECTED] `- people.debian.org/~aurel32 | www.aurel32.net -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
