D27170.diff
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	Index: head/sys/conf/kern.mk
	===================================================================
	--- head/sys/conf/kern.mk
	+++ head/sys/conf/kern.mk
	@@ -230,15 +230,15 @@
	#
	# Initialize stack variables on function entry
	#
	-.if defined(MK_INIT_ALL_ZERO) && ${MK_INIT_ALL_ZERO} == "yes"
	-.if defined(COMPILER_FEATURES) && ${COMPILER_FEATURES:Minit-all}
	+.if ${MK_INIT_ALL_ZERO} == "yes"
	+.if ${COMPILER_FEATURES:Minit-all}
	CFLAGS+= -ftrivial-auto-var-init=zero \
	-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
	.else
	.warning InitAll (zeros) requested but not support by compiler
	.endif
	-.elif defined(MK_INIT_ALL_PATTERN) && ${MK_INIT_ALL_PATTERN} == "yes"
	-.if defined(COMPILER_FEATURES) && ${COMPILER_FEATURES:Minit-all}
	+.elif ${MK_INIT_ALL_PATTERN} == "yes"
	+.if ${COMPILER_FEATURES:Minit-all}
	CFLAGS+= -ftrivial-auto-var-init=pattern
	.else
	.warning InitAll (pattern) requested but not support by compiler
	Index: head/sys/conf/kern.opts.mk
	===================================================================
	--- head/sys/conf/kern.opts.mk
	+++ head/sys/conf/kern.opts.mk
	@@ -52,6 +52,8 @@
	__DEFAULT_NO_OPTIONS = \
	BHYVE_SNAPSHOT \
	EXTRA_TCP_STACKS \
	+ INIT_ALL_PATTERN \
	+ INIT_ALL_ZERO \
	KERNEL_RETPOLINE \
	OFED \
	RATELIMIT \