Messages in this thread | | | Date | Mon, 9 Jun 2008 15:14:41 -0700 | From | Greg KH <> | Subject | Re: [BUG: 2.6.26-rc3] ERROR: "____ilog2_NaN" undefined |
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On Sun, Jun 08, 2008 at 02:41:12PM +0200, Mirco Tischler wrote: > Here's an update: > I've contacted the gcc folks. Here is the bugzilla entry: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36359 > We were able to trace the error down to usb_submit_urb() in > drivers/usb/core/urb.c which calls ilog2() and the gcc falsely assumes its > argument (urb->interval) to be zero. But as I understood they say it's the > kernel's fault because the code depends on correct optimization what seems a > little weird for me as incorrect optimization is a gcc bug IMHO. But I am not > an expert and maybe I've just understood something wrong because I'm not a > native speaker.
I'm confused how the kernel code could be at fault here.
How could it be fixed to not be at fault?
thanks,
greg k-h
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