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| author | Sami Tolvanen <samitolvanen@google.com> | 2022-09-30 22:33:10 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-10-01 16:46:05 +0200 |
| commit | 2120635108b35ecad9c59c8b44f6cbdf4f98214e (patch) | |
| tree | 40203cf8ee27891716c688d3dffd948cd14d593b /scripts/Makefile.extrawarn | |
| parent | hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero (diff) | |
| download | linux-2120635108b35ecad9c59c8b44f6cbdf4f98214e.tar.xz linux-2120635108b35ecad9c59c8b44f6cbdf4f98214e.zip | |
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
We enable -Wcast-function-type globally in the kernel to warn about
mismatching types in function pointer casts. Compilers currently
warn only about ABI incompability with this flag, but Clang 16 will
enable a stricter version of the check by default that checks for an
exact type match. This will be very noisy in the kernel, so disable
-Wcast-function-type-strict without W=1 until the new warnings have
been addressed.
Cc: stable@vger.kernel.org
Link: https://reviews.llvm.org/D134831
Link: https://github.com/ClangBuiltLinux/linux/issues/1724
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220930203310.4010564-1-samitolvanen@google.com
Diffstat (limited to 'scripts/Makefile.extrawarn')
| -rw-r--r-- | scripts/Makefile.extrawarn | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 0621c39a3955..20df48637373 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -52,6 +52,7 @@ KBUILD_CFLAGS += -Wno-sign-compare KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast) KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access) +KBUILD_CFLAGS += $(call cc-disable-warning, cast-function-type-strict) endif endif |