Re: [PATCH] rust: fix bindgen build error with UBSAN_BOUNDS_STRICT

From: Kees Cook
Date: Tue Jul 11 2023 - 12:12:22 EST


On Tue, Jul 11, 2023 at 09:19:14AM +0200, Andrea Righi wrote:
> With commit 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC") if
> CONFIG_UBSAN is enabled and gcc supports -fsanitize=bounds-strict, we
> can trigger the following build error due to bindgen lacking support for
> this additional build option:
>
> BINDGEN rust/bindings/bindings_generated.rs
> error: unsupported argument 'bounds-strict' to option '-fsanitize='
>
> Fix by adding -fsanitize=bounds-strict to the list of skipped gcc flags
> for bindgen.
>
> Fixes: 2d47c6956ab3 ("ubsan: Tighten UBSAN_BOUNDS on GCC")
> Signed-off-by: Andrea Righi <andrea.righi@xxxxxxxxxxxxx>

Thanks for catching this!

Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>

--
Kees Cook