On Tue, Oct 9, 2018 at 10:13 PM, Michael Ellerman <m...@ellerman.id.au> wrote: > Upstream has declared that Variable Length Array's (VLAs) are a bad > idea, and eventually -Wvla will be added to the top-level Makefile. We > can go one better and make sure we don't introduce any more by adding > it to the arch Makefile. > > Signed-off-by: Michael Ellerman <m...@ellerman.id.au> > --- > arch/powerpc/Kbuild | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/powerpc/Kbuild b/arch/powerpc/Kbuild > index 1625a06802ca..86b261d6bde5 100644 > --- a/arch/powerpc/Kbuild > +++ b/arch/powerpc/Kbuild > @@ -1,4 +1,5 @@ > -subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror > +subdir-ccflags-y := $(call cc-option, -Wvla) > +subdir-ccflags-$(CONFIG_PPC_WERROR) += -Werror > > obj-y += kernel/ > obj-y += mm/
-Wvla will be going into the top-level Makefile in the merge window (see linux-next), so this will be redundant. -Kees -- Kees Cook Pixel Security
