Re: ACPICA compilation error on x86_64_defconfig (W=1 build)

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+Saket

On Mon, Apr 7, 2025 at 8:47 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxx> wrote:
>
> v6.15-rc1 (but seems older should also be problematic) fails to compile by
> Clang 19 with `make W=1`.
>
>   CC      drivers/acpi/acpica/nsaccess.o
>   drivers/acpi/acpica/nsaccess.c:295:6: error: variable 'num_carats' set but not used [-Werror,-Wunused-but-set-variable]
>     295 |         u32 num_carats;
>         |             ^
>   1 error generated.
>
> I looked briefly in the code and I have no idea how to fix this, as probably
> __maybe_unused not an option for ACPICA. Hence this report.
>
> Note, the in-tree defconfig is in use:
>
>         git checkout v6.15-rc1
>         make x86_64_defconfig
>         make W=1
>
> should trigger it.
>
> --





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