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To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org,
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From: Dimitry Andric <dim@FreeBSD.org>
Subject: git: f4fed768bba4 - stable/12 - Don't error out on unused but set
variables with clang 13
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The branch stable/12 has been updated by dim:
URL: https://cgit.FreeBSD.org/src/commit/?id=f4fed768bba45a406f73ed1491d7e52fd1a8711d
commit f4fed768bba45a406f73ed1491d7e52fd1a8711d
Author: Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2021-08-29 13:53:40 +0000
Commit: Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2021-09-02 23:30:30 +0000
Don't error out on unused but set variables with clang 13
Clang 13.0.0 now has a -Wunused-but-set-variable warning similar to the
one gcc has had for quite a while. Since this triggers *very* often for
our kernel builds, don't make it a hard error, but leave the warning
visible so is some incentive to fix the instances.
(cherry picked from commit 395d46caaed73228b84dfaeb37c702304a46ba8f)
---
sys/conf/kern.mk | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index d87752649679..34ffc8cb15ca 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -25,6 +25,9 @@ NO_WUNNEEDED_INTERNAL_DECL= -Wno-error=unneeded-internal-declaration
NO_WSOMETIMES_UNINITIALIZED= -Wno-error=sometimes-uninitialized
NO_WCAST_QUAL= -Wno-error=cast-qual
NO_WTAUTOLOGICAL_POINTER_COMPARE= -Wno-tautological-pointer-compare
+.if ${COMPILER_VERSION} >= 100000
+NO_WMISLEADING_INDENTATION= -Wno-misleading-indentation
+.endif
# Several other warnings which might be useful in some cases, but not severe
# enough to error out the whole kernel build. Display them anyway, so there is
# some incentive to fix them eventually.
@@ -33,8 +36,8 @@ CWARNEXTRA?= -Wno-error=tautological-compare -Wno-error=empty-body \
-Wno-error=pointer-sign
CWARNEXTRA+= -Wno-error=shift-negative-value
CWARNEXTRA+= -Wno-address-of-packed-member
-.if ${COMPILER_VERSION} >= 100000
-NO_WMISLEADING_INDENTATION= -Wno-misleading-indentation
+.if ${COMPILER_VERSION} >= 130000
+CWARNFLAGS+= -Wno-error=unused-but-set-variable
.endif
.endif # clang