Messages in this thread | | | Subject | Re: [PATCH] powerpc: Avoid clang warnings around setjmp and longjmp | From | Christophe Leroy <> | Date | Mon, 12 Aug 2019 07:37:51 +0200 |
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Le 12/08/2019 à 04:32, Nathan Chancellor a écrit : > Commit aea447141c7e ("powerpc: Disable -Wbuiltin-requires-header when > setjmp is used") disabled -Wbuiltin-requires-header because of a warning > about the setjmp and longjmp declarations. > > r367387 in clang added another diagnostic around this, complaining that > there is no jmp_buf declaration. > [...]
> > Cc: stable@vger.kernel.org # 4.19+ > Link: https://github.com/ClangBuiltLinux/linux/issues/625 > Link: https://github.com/llvm/llvm-project/commit/3be25e79477db2d31ac46493d97eca8c20592b07 > Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> > --- > [...]
> > arch/powerpc/kernel/Makefile | 5 +++-- > arch/powerpc/xmon/Makefile | 5 +++--
What about scripts/recordmcount.c and scripts/sortextable.c which contains calls to setjmp() and longjmp() ?
And arch/um/ ?
Christophe
> 2 files changed, 6 insertions(+), 4 deletions(-) > > diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile > index ea0c69236789..44e340ed4722 100644 > --- a/arch/powerpc/kernel/Makefile > +++ b/arch/powerpc/kernel/Makefile > @@ -5,8 +5,9 @@ > > CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' > > -# Disable clang warning for using setjmp without setjmp.h header > -CFLAGS_crash.o += $(call cc-disable-warning, builtin-requires-header) > +# Avoid clang warnings about longjmp and setjmp built-ins (inclusion of setjmp.h and declaration of jmp_buf type) > +CFLAGS_crash.o += $(call cc-disable-warning, builtin-requires-header) \ > + $(call cc-disable-warning, incomplete-setjmp-declaration) > > ifdef CONFIG_PPC64 > CFLAGS_prom_init.o += $(NO_MINIMAL_TOC) > diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile > index f142570ad860..53f341391210 100644 > --- a/arch/powerpc/xmon/Makefile > +++ b/arch/powerpc/xmon/Makefile > @@ -1,8 +1,9 @@ > # SPDX-License-Identifier: GPL-2.0 > # Makefile for xmon > > -# Disable clang warning for using setjmp without setjmp.h header > -subdir-ccflags-y := $(call cc-disable-warning, builtin-requires-header) > +# Avoid clang warnings about longjmp and setjmp built-ins (inclusion of setjmp.h and declaration of jmp_buf type) > +subdir-ccflags-y := $(call cc-disable-warning, builtin-requires-header) \ > + $(call cc-disable-warning, incomplete-setjmp-declaration) > > GCOV_PROFILE := n > KCOV_INSTRUMENT := n >
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