Subject: Re: [PATCH] powerpc: Avoid clang warnings around setjmp and longjmp

From: Nathan Chancellor <[email-masked]>
Date: Mon, 12 Aug 2019 09:55:18 -0700

On Mon, Aug 12, 2019 at 07:37:51AM +0200, Christophe Leroy wrote:
> 
> 
> 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: [email-masked] # 4.19+
> > Link: https://github.com/ClangBuiltLinux/linux/issues/625
> > Link: https://github.com/llvm/llvm-project/commit/3be25e79477db2d31ac46493d97eca8c20592b07
> > Signed-off-by: Nathan Chancellor <[email-masked]>
> > ---
> > 
> [...]
> 
> > 
> >   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

Hi Christophe,

It looks like all of those will be using the system's setjmp header,
which won't cause these warnings.

Cheers,
Nathan