Re: [PATCH v5 00/18] Rework READ_ONCE() to improve codegen

[Peter Zijlstra]

On Thu, May 14, 2020 at 01:01:04PM +0100, Will Deacon wrote:

> > +#if __has_feature(undefined_sanitizer)
> 
> Hmm, this might want to be __has_feature(undefined_behavior_sanitizer)
> (and damn is that hard for a Brit to type out!)

(I know right, it should be behaviour, dammit!)

I tried without the condition, eg.:

+#define __no_sanitize_undefined \
+               __attribute__((no_sanitize("undefined")))

and it still generated UBSAN gunk.