On 09.03.2021 22:27, Andrew Cooper wrote: > On 08/03/2021 13:36, Elliott Mitchell wrote: >> typeof() is available in Xen's build environment, which uses Xen's >> compiler. As these headers are public, they need strict standards >> conformance. Only __typeof__() is officially standardized. >> >> A compiler in standards conformance mode should report: >> >> warning: implicit declaration of function 'typeof' is invalid in C99 >> [-Wimplicit-function-declaration] >> >> (this has been observed with FreeBSD's kernel build environment) >> >> Based-on-patch-by: Julien Grall <jul...@xen.org>, Sun Oct 4 20:33:04 2015 >> +0100 >> Signed-off-by: Elliott Mitchell <ehem+...@m5p.com> > > s!arm!xen/public! in the subject seeing as two thirds of the > modifications are in non-ARM headers. > > Acked-by: Andrew Cooper <andrew.coop...@citrix.com> > > This wants backporting as a build fix, so should be considered for 4.15 > at this point. > > I wonder why our header checks don't pick this up. Do we need to throw > a -pedantic around?
That's a long-standing issue with the checking: For issues to be found in macros, the macros would actually need to be used. Jan
