Re: [PATCH v2 1/4] compiler.h: Introduce absolute_pointer macro

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On Wed, Sep 15, 2021 at 5:52 AM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> absolute_pointer() disassociates a pointer from its originating symbol
> type and context. Use it to prevent compiler warnings/errors such as
> drivers/net/ethernet/i825xx/82596.c: In function 'i82596_probe':
> ./arch/m68k/include/asm/string.h:72:25: error:
>         '__builtin_memcpy' reading 6 bytes from a region of size 0
>                 [-Werror=stringop-overread]
> Such warnings may be reported by gcc 11.x for string and memory operations
> on fixed addresses.
> Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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