Propagate all closure requirements to the caller
Closes#56477
This should be backported to 1.32 if it doesn't make the cut.
r? @pnkfelix
cc @nikomatsakis
Rollup of 13 pull requests
Successful merges:
- #56141 ([std] Osstr len clarity)
- #56366 (Stabilize self_in_typedefs feature)
- #56395 (Stabilize dbg!(...))
- #56401 (Move VecDeque::resize_with out of the impl<T:Clone> block)
- #56402 (Improve the unstable book example for #[marker] trait)
- #56412 (Update tracking issue for `extern_crate_self`)
- #56416 (Remove unneeded body class selector)
- #56418 (Fix failing tidy (line endings on Windows))
- #56419 (Remove some uses of try!)
- #56432 (Update issue number of `shrink_to` methods to point the tracking issue)
- #56433 (Add description about `crate` for parse_visibility's comment)
- #56435 (make the C part of compiler-builtins opt-out)
- #56438 (Remove not used `DotEq` token)
Failed merges:
r? @ghost
Stabilize dbg!(...)
Per FCP in https://github.com/rust-lang/rust/issues/54306 (which is ~1 day from completion).
r? @SimonSapin
The PR is fairly isolated so a rollup should probably work.
Enable -mergefunc-use-aliases
If the Rust LLVM fork is used, enable the -mergefunc-use-aliases
flag, which will create aliases for merged functions, rather than
inserting a call from one to the other.
A number of codegen tests needed to be adjusted, because functions
that previously fell below the thunk limit are now being merged.
Merging is prevented in various ways now.
I expect that this is going to break something, somewhere, because
it isn't able to deal with aliases properly, but we won't find out
until we try :)
This fixes#52651.
r? @rkruppe
dropping the param-env on the floor is obviously the wrong thing to do.
The ICE was probably exposed by #54490 adding the problem-exposing use of
`traits::find_associated_item`.
Fixes#55380.
Consider references and unions potentially inhabited during privacy-respecting inhabitedness checks
It isn't settled exactly how references to uninhabited types and unions of uninhabited types should act, but we should be more conservative here, as it's likely it will be permitted to soundly have values of such types.
This will also be more important in light of the changes at https://github.com/rust-lang/rust/pull/54125.
cc @RalfJung
drop glue takes in mutable references, it should reflect that in its type
When drop glue begins, it should retag, like all functions taking references do. But to do that, it needs to take the reference at a proper type: `&mut T`, not `*mut T`.
Failing to retag can mean that the memory the reference points to remains frozen, and `EscapeToRaw` on a frozen location is a NOP, meaning later mutations cause a Stacked Borrows violation.
Cc @nikomatsakis @Gankro because Stacked Borrows
Cc @eddyb for the changes to miri argument passing (the intention is to allow passing `*mut [u8]` when `&mut [u8]` is expected and vice versa)
