?Sized bounds for rc::Weak::as_ptr and friends #74022
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....to allow use with unsized T. This is a follow-up to rust-lang#73845, which did the impl work required to be able to relax these bounds.
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Specifically, this relaxes the bounds on
rc::Weak::as_ptr,into_raw, andfrom_rawfromimpl<T> Weak<T>toimpl<T: ?Sized> Weak<T>.This is a follow-up to #73845, which did the impl work required to be able to relax these bounds.
IIUC, this technically stabilizes that "something like
size_of_val_raw" is possible to do. However, I believe the part of the functionality required by these methods here -- specifically, getting the size of a pointee from a pointer where it may be dangling iff the pointee isSized-- is uncontroversial enough to stabilize these methods without a way to implement them on stable Rust.ATTN: This changes (relaxes) the (input) generic bounds on stable
fn!