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This change implements the #[sanitize(..)] attribute, which opts to replace the currently unstable #[no_sanitize]. Essentially the new attribute works similar as #[no_sanitize], just with more flexible options regarding where it is applied. E.g. it is possible to turn a certain sanitizer either on or off: `#[sanitize(address = "on|off")]` This attribute now also applies to more places, e.g. it is possible to turn off a sanitizer for an entire module or impl block: ```rust \#[sanitize(address = "off")] mod foo { fn unsanitized(..) {} #[sanitize(address = "on")] fn sanitized(..) {} } \#[sanitize(thread = "off")] impl MyTrait for () { ... } ``` This attribute is enabled behind the unstable `sanitize` feature.