Don't place a raw pointer in a static.

[eddyb]

It was only ever allowed because of a bug, see rust-lang/rust#33130.

[SSheldon]

Hey @eddyb, thanks for the PR and heads up about this. I'm not sure what to do here in regard to providing familiar bindings to libdispatch.

dispatch_get_main_queue was fine as a function because that one actually is modeled as a static inline function in libdispatch. DISPATCH_QUEUE_CONCURRENT, though, is defined in a macro so accessing it through a function named dispatch_get_attr_concurrent_queue will be a little surprising.

It's still allowed to use a 'static Sync reference in a static, right? I think I'm just going to try changing the type of this to &'static dispatch_object_s for now (which will keep working because that's coerced to *const dispatch_object_s, aka dispatch_queue_attr_t) until a better solution comes along.

[SSheldon]

The fix I've applied is in 3d68d46, let me know if that looks like it'll still cause issues.

Thanks a bunch for reaching out about the issue, really appreciate it :)

[eddyb]

That works as well, thank you for handling it!