This is a quick-fix for an ICE in `tabs_in_doc_comments`. The problem
was that we we're indexing into possibly multi-byte characters, such as '位'.

More specifically `get_chunks_of_tabs` was returning indices into
multi-byte characters. Those were passed on to a `Span` creation that
then caused the ICE.

This fix makes sure that we don't return indices that point inside a
multi-byte character. *However*, we are still iterating over unicode
codepoints, not grapheme clusters. So a seemingly single character like y̆ ,
which actually consists of two codepoints, will probably still cause
incorrect spans in the output.

Only lint when `into_iter` is an implementation of `IntoIterator`
Minor cleanups

Fix `macro_use_import` ICE

fixes: rust-lang#7015
changelog: Fix `macro_use_import` ICE

…ffen

Invalid null usage v2

This is continuation of rust-lang#6192 after inactivity.

I plan to move paths into the compiler as diagnostic items after this is merged.

fixes rust-lang#1703
changelog: none

This still applies the lint, and also adds a structured suggestion to
rename it.

Use `register_renamed` instead of `register_removed` for uplifted lints

This still applies the lint, and also adds a structured suggestion to
rename it.

changelog: Use `register_renamed` instead of `register_removed` for lints uplifted to rustc

…fn, r=flip1995

Remove `debug_assert` from `panic_in_result_fn`

I couldn't find any documentation on `debug_assert` that should be remove.
In my humble opinion, I would also like to argue that `todo` and `unreachable` shouldn't trigger this lint?

Related: rust-lang/rust-clippy#6082

r? `@flip1995`

changelog: Change `panic_in_result_fn` to ignore `debug_assert` and co macros

…arth

Fix false-positive `debug_assert` in `panic`

This fixes a false-positive in `clippy::panic` when `debug_assert` is used with a message.

Fixes rust-lang/rust-clippy#7062.

changelog: Fix false-positive in `panic` when `debug_assert` is used with a message

…0, r=giraffate

Fix FP in `single_component_path_imports` lint

Fix FP in  `single_component_path_imports` lint when the import is reused with `self`, like in `use self::module`.

Fixes rust-lang#5210

changelog: none

Deprecate `filter_map`

Since rust-lang#6591, `filter_map` does not even lint `filter().map()`. The cases that are still linted make no sense IMO. So this just removes/deprecates it.

changelog: Deprecate `filter_map` lint

Closes rust-lang#3424
Fixes rust-lang#7050

…ishearth

Add a note on the issue rust-lang#5953

Hello,

I thought it would be better to have a note and warning about this issue considering it introduced an UB in the past even with the "Search on Github" feature.

---

changelog: Add a note on the issue rust-lang#5953 to the known problems section.

Introduce `is_lang_ctor`

changelog: none

Replaces `is_some_ctor` and `is_ok_ctor`. Removes many path usages.

Rustup

r? `@ghost`

changelog: none

… clean::Module

It can be calculated on-demand even without a TyCtxt.

This also changed `from_item_kind` to take a whole item, which avoids
having to add more and more parameters.

This was missed a while ago when support for proc-macro attributes was
first added.

…ode, r=pnkfelix

Implement a lint that highlights all moves larger than a configured limit

Tracking issue: rust-lang#83518
[MCP 420](rust-lang/compiler-team#420) still ~blazing~ in progress

r? `@pnkfelix`

The main open issue I see with this minimal impl of the feature is that the lint is immediately "stable" (so it can be named on stable), even if it is never executed on stable. I don't think we have the concept of unstable lint names or hiding lint names without an active feature gate, so that would be a bigger change.

…es, r=varkor

various const parameter defaults improvements

Actually resolve names in const parameter defaults, fixing `struct Foo<const N: usize = { usize::MAX }>`.

---
Split generic parameter ban rib for types and consts, allowing
```rust
#![feature(const_generics_defaults)]
struct Q;
struct Foo<T = Q, const Q: usize = 3>(T);
```

---
Remove the type/const ordering restriction if `const_generics_defaults` is active, even if `const_generics` is not. allowing us to stabilize and test const param defaults separately.

---
Check well formedness of const parameter defaults, eagerly emitting an error for `struct Foo<const N: usize = { 0 - 1 }>`

---
Do not forbid const parameters in param defaults, allowing `struct Foo<const N: usize, T = [u8; N]>(T)` and `struct Foo<const N: usize, const M: usize = N>`. Note that this should not change anything which is stabilized, as on stable, type parameters must be in front of const parameters, which means that type parameter defaults are only allowed if no const parameters exist.

We still forbid generic parameters inside of const param types.

r? ```````@varkor``````` ```````@petrochenkov```````

…r=dtolnay

Ensure TLS destructors run before thread joins in SGX

The excellent test is from ```@jethrogb```

For context see: rust-lang#83416 (comment)

Update cargo, rls

## cargo

18 commits in 65d57e6f384c2317f76626eac116f683e2b63665..0ed318d182e465cd66071b91ac3d265af63ef8a1
2021-04-04 15:07:52 +0000 to 2021-04-23 20:54:54 +0000
- Restore crates.io's `SourceId` hash value to before (rust-lang/cargo#9397)
- Fix loading `branch=master` patches in the v3 lock transition (rust-lang/cargo#9392)
- Update changelog for 1.52 beta changes. (rust-lang/cargo#9396)
- Fix build-std updating the index on every build. (rust-lang/cargo#9393)
- Fix typo in profile docs (rust-lang/cargo#9386)
- Fix disagreement about lockfile ordering on stable/nightly (rust-lang/cargo#9384)
- Don't give a hard error when the end-user specifies RUSTC_BOOTSTRAP=crate_name (rust-lang/cargo#9365)
- Fix rust-lang/cargo#9350 (cargo build -Z help is missing options) (rust-lang/cargo#9369)
- an struct -> a struct (rust-lang/cargo#9379)
- Handle man pages better on Windows. (rust-lang/cargo#9378)
- fix: better error message when dependency/workspace member missing (rust-lang/cargo#9368)
- Fix typo in book (rust-lang/cargo#9376)
- Don't re-use rustc cache when RUSTC_WRAPPER changes (rust-lang/cargo#9348)
- doc: add split-debuginfo doc in config chapter (rust-lang/cargo#9372)
- refactor: remove `CargoResultExt` (rust-lang/cargo#9367)
- Track "CARGO" in environment fingerprint. (rust-lang/cargo#9363)
- Update clippy lint allow set. (rust-lang/cargo#9356)
- Fix 'suport' typo in documentation (rust-lang/cargo#9338)

## rls

3 commits in 32c0fe006dcdc13e1ca0ca31de543e4436c1299e..74d1800c25498689c5b5120a1e8495fce0cd0d0d
2021-04-12 11:21:12 +0000 to 2021-04-22 21:29:51 +0000
- Bump default integration test message timeout to 30s (rust-lang/rls#1731)
- itertools = 0.9, fst = 0.4 (rust-lang/rls#1729)
- Update cargo (rust-lang/rls#1728)

Update Clippy

r? `@Manishearth`

Biweekly Clippy update.

rustdoc: Remove unnecessary `is_crate` field from doctree::Module and clean::Module

It can be calculated on-demand even without a TyCtxt.

This also changed `json::conversions::from_item_kind` to take a whole item, which avoids
having to add more and more parameters.

Helps with rust-lang#76382.

r? `@camelid`

rustdoc: Get rid of `clean::TypeKind`

It does exactly the same thing as ItemType.