Package: kfreebsd-8 / 8.3-6+deb7u1

901_disable_optimization_2.diff Patch series | download
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Regretably, with GCC 4.4 or later this is the only flag combination
I could find that doesn't cause kernel panics CPU triple-faults or
other kind of severe breakage.

--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -38,6 +38,9 @@
 COPTFLAGS+= -fno-strict-aliasing
 . endif
 .endif
+.if !empty(COPTFLAGS:M-O[23s])
+COPTFLAGS+= -O1
+.endif
 .if !defined(NO_CPU_COPTFLAGS)
 . if ${CC} == "icc"
 COPTFLAGS+= ${_ICC_CPUCFLAGS:C/(-x[^M^K^W]+)[MKW]+|-x[MKW]+/\1/}
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -79,6 +79,9 @@
 . if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
 CFLAGS+=	-fno-strict-aliasing
 . endif
+. if !empty(CFLAGS:M-O[23s])
+CFLAGS+=       -O1
+. endif
 WERROR?=	-Werror
 .endif
 CFLAGS+=	${WERROR}