On Wed, May 12, 2021 at 06:48:52PM +0000, Liam Howlett wrote:
> Copy __must_be_array() define from include/linux/compiler.h for use in
> the radix tree test suite userspace compiles.
We needed this earlier, but see commit
7487de534dcbe143e6f41da751dd3ffcf93b00ee
I bet if you revert this commit, it'll still build fine.
Also, I bet patch 1/4 is the same -- I see a definition of
fallthrough in tools/include/linux/compiler-gcc.h
> Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
> ---
> tools/testing/radix-tree/linux/kernel.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/tools/testing/radix-tree/linux/kernel.h b/tools/testing/radix-tree/linux/kernel.h
> index c400a27e544a..2c3771fff2c0 100644
> --- a/tools/testing/radix-tree/linux/kernel.h
> +++ b/tools/testing/radix-tree/linux/kernel.h
> @@ -30,4 +30,6 @@
> # define fallthrough do {} while (0) /* fallthrough */
> #endif /* __has_attribute */
>
> +#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
> +
> #endif /* _KERNEL_H */
> --
> 2.30.2
