gcc-12: build errors: arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is outside array bounds of 'char[]' [-Warray-bounds]

[Arnd Bergmann]

On Fri, Jun 3, 2022 at 4:03 AM Naresh Kamboju <naresh.kamboju at linaro.org> wrote:
>     inlined from 'setup_arch' at arch/arm64/kernel/setup.c:350:2:
> arch/arm64/kernel/setup.c:225:56: warning: array subscript -1 is
> outside array bounds of 'char[]' [-Warray-bounds]
>   225 |         kernel_code.end     = __pa_symbol(__init_begin - 1);
>

Is this the only warning of this type that you get for arm64?

I think the easy fix would be to reword this line to

       kernel_code.end     = __pa_symbol(__init_begin) - 1;


        Arnd