If we’re adopting [[maybe_unused]], do we just write that directly in each 
function declaration / definition? Or do we define some a macro to do that 
anyway?

What bout other kinds of attributes like [[noreturn]], [[fallthrough]], and 
[[likely]]? Are we gonna start writing them directly in code, or are we gonna 
continue to use macros?

- R. NIwa

> On Jan 24, 2024, at 9:49 AM, Chris Dumez via webkit-dev 
> <webkit-dev@lists.webkit.org> wrote:
> 
> Hi,
> 
> Thanks for starting this discussion.
> 
> I personally think it would be nice for us to switch to [[maybe_unused]] 
> since it is now part of the language and it seems to fit our needs. However, 
> I do think we should be consistent and stop using UNUSED_PARAM() / 
> ASSERT_UNUSED() in new code entirely then.
> 
> So if we decide to switch, I think should add style checks to prevent using 
> UNUSED_PARAM() / ASSERT_UNUSED() and recommend using [[maybe_unused]] 
> instead. Eventually, we should try to phase out existing usage of these 
> macros so that we can remove them entirely.
> 
> Cheers,
> Chris.
> 
>> On Jan 24, 2024, at 9:34 AM, Alex Christensen via webkit-dev 
>> <webkit-dev@lists.webkit.org> wrote:
>> 
>> For many years we have used the UNUSED_PARAM macros, and we have almost 3000 
>> of them.  C++17 introduced [[maybe_unused]] for this purpose, and a few uses 
>> of it are starting to pop up in WebKit.  Should we switch, should we 
>> transition, should we allow both, or should we just stick with UNUSED_PARAM?
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