Use of raw RWLock instead of RwLock

[hellow554]

rust/src/libstd/panicking.rs

Lines 57 to 58 in 7ac0200

	static HOOK_LOCK: RWLock = RWLock::new();
	static mut HOOK: Hook = Hook::Default;

looking at these two lines of code is very frightening.
Is there a specific reason to use RWLock instead of RwLock? I would open a PR with either using RwLock or a comment describing why RWLock is needed here.

@rustbot modify labels: T-libs

[Lonami]

Just another thought, isn't the naming itself a bit dangerous? RW vs. Rw seems like an easy typo to make. Perhaps renaming RW as RawRw could help?

[sfackler]

RwLock can't be statically initialized, or at least couldn't be when that code was written. That'll change once the parking_lot PR lands.

[hellow554]

Hey @sfackler
has the parking_lot PR already landed? Can you maybe tell the PR number? I would like to give it a shot to clean this up.

[mati865]

It was not merged: #56410 (comment)

[hellow554]

I will close this issue as I don't see that this can and will be addressed any time soon. Thank you for your answer mati :)