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

From: Nathan Chancellor
Date: Tue Sep 03 2019 - 01:56:09 EST

On Thu, Aug 29, 2019 at 09:59:48AM +0000, David Laight wrote:
> From: Nathan Chancellor
> > Sent: 28 August 2019 19:45
> ...
> > However, I think that -fno-builtin-* would be appropriate here because
> > we are providing our own setjmp implementation, meaning clang should not
> > be trying to do anything with the builtin implementation like building a
> > declaration for it.
> Isn't implementing setjmp impossible unless you tell the compiler that
> you function is 'setjmp-like' ?

No idea, PowerPC is the only architecture that does such a thing.

Goes back all the way to before git history (all the way to ppc64's
addition actually):

I would just like this warning fixed given that PowerPC builds with
-Werror by default so it is causing a build failure in our CI.