Re: [PATCH v1] misra: add deviation for rules 21.1 and 21.2

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 23 Apr 2025, victorm.lira@xxxxxxx wrote:
> From: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
> 
> MISRA C Rules 21.1 ("#define and #undef shall not be used on a
> reserved identifier or reserved macro name") and R21.2 ("A reserved
> identifier or reserved macro name shall not be declared") violations
> are not problematic for Xen, as it does not use the C or POSIX
> libraries.
> 
> Xen uses -fno-builtin and -nostdinc to ensure this, but there are still
> __builtin_* functions from the compiler that are available so
> a deviation is formulated for all identifiers not starting with
> "__builtin_".
> 
> The missing text of a deviation for Rule 21.2 is added to
> docs/misra/deviations.rst.
> 
> To avoid regressions, tag both rules as clean and add them to the
> monitored set.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
> Signed-off-by: Federico Serafini <federico.serafini@xxxxxxxxxxx>
> Signed-off-by: Victor Lira <victorm.lira@xxxxxxx>

Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>