[PATCH v5 13/36] bit_spinlock: Support Clang's context analysis

[Bart Van Assche]

On 12/19/25 7:40 AM, Marco Elver wrote:
> +/*
> + * For static context analysis, we need a unique token for each possible bit
> + * that can be used as a bit_spinlock. The easiest way to do that is to create a
> + * fake context that we can cast to with the __bitlock(bitnum, addr) macro
> + * below, which will give us unique instances for each (bit, addr) pair that the
> + * static analysis can use.
> + */
> +context_lock_struct(__context_bitlock) { };
> +#define __bitlock(bitnum, addr) (struct __context_bitlock *)(bitnum + (addr))

Will this cause static analyzers to complain about out-of-bounds
accesses for (bitnum + (addr)), which is equivalent to &(addr)[bitnum]?

Thanks,

Bart.