Re: [PATCH 00/22] add support for Clang LTO

Peter Zijlstra
2020-07-03T13:25:50Z

On Fri, Jul 03, 2020 at 03:13:30PM +0200, Peter Zijlstra wrote:
> > The prototype for GCC is here: https://github.com/AKG001/gcc/
>
> Thanks! Those test cases are somewhat over qualified though:
>
> static volatile _Atomic (TYPE) * _Dependent_ptr a; \

One question though; since its a qualifier, and we've recently spend a
whole lot of effort to strip qualifiers in say READ_ONCE(), how does,
and how do we want, this qualifier to behave.

C++ has very convenient means of manipulating qualifiers, so it's not
much of a problem there, but for C it is, as we've found, really quite
cumbersome. Even with _Generic() we can't manipulate individual
qualifiers afaict.