On Wed, May 28, 2008 at 06:55:29PM -0400, Carlos O'Donell wrote: > On Wed, May 28, 2008 at 4:00 PM, Kyle McMartin <kyle@xxxxxxxxxxx> wrote: > > On Wed, May 28, 2008 at 03:09:46PM -0400, Kyle McMartin wrote: > >> So I've narrowed the regression down to a miscompilation (presumably) of > >> net/ipv4/ip_output.o, in the sense that > >> > >> cp linux-2.6-gcc34/net/ipv4/ip_output.o > >> linux-2.6-gcc43/net/ipv4/ip_output.o > >> touch linux-2.6-gcc43/net/ipv4/ip_output.o > >> make vmlinux > >> > >> fixes the issue. > >> > > > > Apparently I was on glue and gcc-4.2 is not problematic. > > If you compile ip_output.c with -O0 does it work with gcc-4.3? > Building the kernel without optimization is very tetchy... if you can guess what passes to remove, I can try... one of the optimization effects that must go is DCE though, otherwise we'll have undefined references to things (ie: kmalloc_too_much in a switch that should have been eliminated except the constant case.) r, Kyle -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
