| Message ID | ZVWMCZ/jb4nX3yHn@work (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [next] Makefile: Enable -Wstringop-overflow globally | expand |
On Thu, Nov 16, 2023 at 12:27 PM Gustavo A. R. Silva <gustavoars@kernel.org> wrote: > > It seems that we have finished addressing all the remaining > issues regarding compiler option -Wstringop-overflow. So, we > are now in good shape to enable this compiler option globally. > > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> > --- > Makefile | 3 +++ > scripts/Makefile.extrawarn | 2 -- > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/Makefile b/Makefile > index 690cde550acd..452b7d0e19e9 100644 > --- a/Makefile > +++ b/Makefile > @@ -985,6 +985,9 @@ NOSTDINC_FLAGS += -nostdinc > # perform bounds checking. > KBUILD_CFLAGS += $(call cc-option, -fstrict-flex-arrays=3) > > +# We are now in good shape to enable this option. Please remove this comment. It it fine to mention it in the commit log, but not in the Makefile. I hope somebody will double-check this patch in CI infrastructure. > +KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) > + > # disable invalid "can't wrap" optimizations for signed / pointers > KBUILD_CFLAGS += -fno-strict-overflow > > diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn > index 2fe6f2828d37..1527199161d7 100644 > --- a/scripts/Makefile.extrawarn > +++ b/scripts/Makefile.extrawarn > @@ -106,7 +106,6 @@ KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable) > KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned) > KBUILD_CFLAGS += $(call cc-option, -Wformat-overflow) > KBUILD_CFLAGS += $(call cc-option, -Wformat-truncation) > -KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) > KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation) > > KBUILD_CPPFLAGS += -Wundef > @@ -122,7 +121,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, restrict) > KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) > KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) > KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) > -KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) > KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) > > ifdef CONFIG_CC_IS_CLANG > -- > 2.34.1 >
On 11/16/23 05:23, Masahiro Yamada wrote: > On Thu, Nov 16, 2023 at 12:27 PM Gustavo A. R. Silva > <gustavoars@kernel.org> wrote: >> >> It seems that we have finished addressing all the remaining >> issues regarding compiler option -Wstringop-overflow. So, we >> are now in good shape to enable this compiler option globally. >> >> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> >> --- >> Makefile | 3 +++ >> scripts/Makefile.extrawarn | 2 -- >> 2 files changed, 3 insertions(+), 2 deletions(-) >> >> diff --git a/Makefile b/Makefile >> index 690cde550acd..452b7d0e19e9 100644 >> --- a/Makefile >> +++ b/Makefile >> @@ -985,6 +985,9 @@ NOSTDINC_FLAGS += -nostdinc >> # perform bounds checking. >> KBUILD_CFLAGS += $(call cc-option, -fstrict-flex-arrays=3) >> >> +# We are now in good shape to enable this option. > > Please remove this comment. > > It it fine to mention it in the commit log, but > not in the Makefile. Sure thing. I'll change that and add this patch to my -next tree. > > > > I hope somebody will double-check this patch in CI infrastructure. I'll take care of that. Thanks -- Gustavo > > > > >> +KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) >> + >> # disable invalid "can't wrap" optimizations for signed / pointers >> KBUILD_CFLAGS += -fno-strict-overflow >> >> diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn >> index 2fe6f2828d37..1527199161d7 100644 >> --- a/scripts/Makefile.extrawarn >> +++ b/scripts/Makefile.extrawarn >> @@ -106,7 +106,6 @@ KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable) >> KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned) >> KBUILD_CFLAGS += $(call cc-option, -Wformat-overflow) >> KBUILD_CFLAGS += $(call cc-option, -Wformat-truncation) >> -KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) >> KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation) >> >> KBUILD_CPPFLAGS += -Wundef >> @@ -122,7 +121,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, restrict) >> KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) >> KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) >> KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) >> -KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) >> KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) >> >> ifdef CONFIG_CC_IS_CLANG >> -- >> 2.34.1 >> > >
diff --git a/Makefile b/Makefile index 690cde550acd..452b7d0e19e9 100644 --- a/Makefile +++ b/Makefile @@ -985,6 +985,9 @@ NOSTDINC_FLAGS += -nostdinc # perform bounds checking. KBUILD_CFLAGS += $(call cc-option, -fstrict-flex-arrays=3) +# We are now in good shape to enable this option. +KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) + # disable invalid "can't wrap" optimizations for signed / pointers KBUILD_CFLAGS += -fno-strict-overflow diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 2fe6f2828d37..1527199161d7 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -106,7 +106,6 @@ KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable) KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned) KBUILD_CFLAGS += $(call cc-option, -Wformat-overflow) KBUILD_CFLAGS += $(call cc-option, -Wformat-truncation) -KBUILD_CFLAGS += $(call cc-option, -Wstringop-overflow) KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation) KBUILD_CPPFLAGS += -Wundef @@ -122,7 +121,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, restrict) KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) KBUILD_CFLAGS += $(call cc-disable-warning, format-overflow) KBUILD_CFLAGS += $(call cc-disable-warning, format-truncation) -KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow) KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) ifdef CONFIG_CC_IS_CLANG
It seems that we have finished addressing all the remaining issues regarding compiler option -Wstringop-overflow. So, we are now in good shape to enable this compiler option globally. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- Makefile | 3 +++ scripts/Makefile.extrawarn | 2 -- 2 files changed, 3 insertions(+), 2 deletions(-)