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The `__counted_by_ptr` macro was recently introduced [1] to extend bounds checking semantics to standard dynamically allocated pointers. However, the new Python implementation of kernel-doc does not currently recognize it as a compiler attribute. When kernel-doc encounters a struct member annotated with this macro, it fails to parse the variable name correctly, resulting in false-positive warnings like: Warning: ... struct member '__counted_by_ptr(cmdcnt' not described Add `__counted_by_ptr` to the `struct_xforms` regex list so it gets safely stripped out during the parsing phase, mirroring the existing behavior for `__counted_by`. Update the corresponding unit tests. Link: https://git.kernel.org/torvalds/c/150a04d817d8 [1] Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Kees Cook <kees@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20260506-kdoc-__counted_by_ptr-v1-1-70763486871f@linaro.org>