In article <412639C8.9080300@mac.com>,
	Chuck Swiger <cswiger@mac.com> writes:
> The most likely answer is that the NetBSD kernel source code accesses memory 
> not entirely in a type-safe fashion, and higher optimization levels will 
> expose these problems because the compiler's assumptions about which
> variables can be changed via pointer, structure, or union member
> dereferencing are not correct.

I don't think so. Kernels compile with "-march=p4" and "-O2" work fine
for me on two differnt systems. My guess is a code generation bug in GCC,
IIRC at least "-march=pentium" is broken.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/