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authorArnd Bergmann <arnd@arndb.de>2022-03-08 22:56:12 +0100
committerMasahiro Yamada <masahiroy@kernel.org>2022-03-13 17:30:31 +0900
commit1344794a59db2bd44b4919d2d75300fd3b1c2cd7 (patch)
tree74bf9a6d3894432e7251919fa6b80dd099af00cd /scripts
parent754e0b0e35608ed5206d6a67a791563c631cec07 (diff)
downloadlwn-1344794a59db2bd44b4919d2d75300fd3b1c2cd7.tar.gz
lwn-1344794a59db2bd44b4919d2d75300fd3b1c2cd7.zip
Kbuild: add -Wno-shift-negative-value where -Wextra is used
As a preparation for moving to -std=gnu11, turn off the -Wshift-negative-value option. This warning is enabled by gcc when building with -Wextra for c99 or higher, but not for c89. Since the kernel already relies on well-defined overflow behavior, the warning is not helpful and can simply be disabled in all locations that use -Wextra. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM/Clang v13.0.0 (x86-64) Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.extrawarn1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 8be892887d71..650d0b8ceec3 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -36,6 +36,7 @@ KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
KBUILD_CFLAGS += -Wno-missing-field-initializers
KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-type-limits
+KBUILD_CFLAGS += -Wno-shift-negative-value
KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1