…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust …

…2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

…uwer

Rollup of 14 pull requests

Successful merges:

 - #157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - #157282 (Fix post-monomorphization error note race in the parallel frontend)
 - #157352 (Make the retained dep graph deterministic under the parallel frontend)
 - #157601 (Emit error for unused target expression in glob and list delegations)
 - #157626 (Autogenerate unstable compiler flag stubs for unstable-book)
 - #157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - #157013 (Ensure inferred let pattern types are well-formed)
 - #157288 (platform support: add SNaN erratum to MIPS targets)
 - #157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - #157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust …)
 - #157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - #157691 (Move symbol hiding code to a new file)
 - #157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - #157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - #157699 (Arg splat experiment - hir FnDecl impl)

…uwer

Rollup of 14 pull requests

Successful merges:

 - #157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - #157282 (Fix post-monomorphization error note race in the parallel frontend)
 - #157352 (Make the retained dep graph deterministic under the parallel frontend)
 - #157601 (Emit error for unused target expression in glob and list delegations)
 - #157626 (Autogenerate unstable compiler flag stubs for unstable-book)
 - #157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - #157013 (Ensure inferred let pattern types are well-formed)
 - #157288 (platform support: add SNaN erratum to MIPS targets)
 - #157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - #157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust …)
 - #157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - #157691 (Move symbol hiding code to a new file)
 - #157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - #157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - #157699 (Arg splat experiment - hir FnDecl impl)

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

Rollup of 23 pull requests

Successful merges:

 - #157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - #157282 (Fix post-monomorphization error note race in the parallel frontend)
 - #157352 (Make the retained dep graph deterministic under the parallel frontend)
 - #157601 (Emit error for unused target expression in glob and list delegations)
 - #157611 (Update `browser-ui-test` version to `0.24.0`)
 - #157620 (Add a strategy FnMut to inject behavior into the flush cycle)
 - #157645 (Windows TLS - Only register the `atexit` hook when `cleanup` can be unloaded)
 - #157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - #157719 (resolve: Partially revert "Remove a special case for dummy imports")
 - #156497 (fix-155516: Don't suggest wrong unwrap expect)
 - #156583 (Support defaults for static EIIs)
 - #157013 (Ensure inferred let pattern types are well-formed)
 - #157230 (borrowck: avoid ICE describing fields on generic params)
 - #157288 (platform support: add SNaN erratum to MIPS targets)
 - #157350 (compiletest: ignore SVG `y` offset in by-lines comparison)
 - #157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - #157384 (Add `#[rustc_dump_generics]` attribute)
 - #157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`)
 - #157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - #157691 (Move symbol hiding code to a new file)
 - #157697 (Add more tests that exercise the well-formedness checking of lazy type aliases)
 - #157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - #157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - #157699 (Arg splat experiment - hir FnDecl impl)

Rollup of 23 pull requests

Successful merges:

 - #157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - #157282 (Fix post-monomorphization error note race in the parallel frontend)
 - #157352 (Make the retained dep graph deterministic under the parallel frontend)
 - #157601 (Emit error for unused target expression in glob and list delegations)
 - #157611 (Update `browser-ui-test` version to `0.24.0`)
 - #157620 (Add a strategy FnMut to inject behavior into the flush cycle)
 - #157645 (Windows TLS - Only register the `atexit` hook when `cleanup` can be unloaded)
 - #157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - #157719 (resolve: Partially revert "Remove a special case for dummy imports")
 - #156497 (fix-155516: Don't suggest wrong unwrap expect)
 - #156583 (Support defaults for static EIIs)
 - #157013 (Ensure inferred let pattern types are well-formed)
 - #157230 (borrowck: avoid ICE describing fields on generic params)
 - #157288 (platform support: add SNaN erratum to MIPS targets)
 - #157350 (compiletest: ignore SVG `y` offset in by-lines comparison)
 - #157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - #157384 (Add `#[rustc_dump_generics]` attribute)
 - #157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`)
 - #157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - #157691 (Move symbol hiding code to a new file)
 - #157697 (Add more tests that exercise the well-formedness checking of lazy type aliases)
 - #157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - #157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - #157699 (Arg splat experiment - hir FnDecl impl)

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

…=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: rust-lang#157565

### Description
A diagnostics improvement rust-lang#84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

Rollup of 31 pull requests

Successful merges:

 - #141030 (Expand free alias types during variance computation)
 - #154853 (mgca: Register `ConstArgHasType` when normalizing projection consts)
 - #155527 (Replace printables table with `unicode_data.rs` tables)
 - #156629 (Stabilize `core::range::{legacy, RangeFull, RangeTo}`)
 - #157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - #157282 (Fix post-monomorphization error note race in the parallel frontend)
 - #157352 (Make the retained dep graph deterministic under the parallel frontend)
 - #157601 (Emit error for unused target expression in glob and list delegations)
 - #157611 (Update `browser-ui-test` version to `0.24.0`)
 - #157620 (Add a strategy FnMut to inject behavior into the flush cycle)
 - #157645 (Windows TLS - Only register the `atexit` hook when `cleanup` can be unloaded)
 - #157646 (Keep rename-imported main alive in dead-code analysis under `--test`)
 - #157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - #157719 (resolve: Partially revert "Remove a special case for dummy imports")
 - #155153 (Ensure Send/Sync is not implemented for std::env::Vars{,Os})
 - #155198 (fix(mgca): Allow specifying generic args (of enum) on enum itself in unit & tuple variant constructions in (direct) const args)
 - #155323 (refactor `TypeRelativePath::AssocItem` to use `AliasTerm`)
 - #156497 (fix-155516: Don't suggest wrong unwrap expect)
 - #156583 (Support defaults for static EIIs)
 - #157013 (Ensure inferred let pattern types are well-formed)
 - #157196 (Only suggest reborrowing a moved value where the reborrow is valid)
 - #157230 (borrowck: avoid ICE describing fields on generic params)
 - #157288 (platform support: add SNaN erratum to MIPS targets)
 - #157330 (remove `IsTypeConst` from `hir::TraitItemKind`)
 - #157350 (compiletest: ignore SVG `y` offset in by-lines comparison)
 - #157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - #157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`)
 - #157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - #157691 (Move symbol hiding code to a new file)
 - #157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - #157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - #157699 (Arg splat experiment - hir FnDecl impl)

Rollup merge of #157577 - i-like-ICEs:fix-dyn-2015-parser, r=fmease

Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`

Fixes: #157565

### Description
A diagnostics improvement #84896 in 2015 edition caused errors when `dyn + dyn` was used, even though `dyn` is a contextual keyword in the 2015 edition.

### Solution
A check was added in `rustc_parse/src/parser/ty.rs:1095`:
```rust
            if self.token.is_keyword(kw::Dyn) && self.token.span.edition().at_least_rust_2018() {
```
This checks that the version is not 2015 before throwing an error.
A regression test was also added, in `tests/ui/parser/dyn-2015-identifier.rs`

Rollup of 31 pull requests

Successful merges:

 - rust-lang#141030 (Expand free alias types during variance computation)
 - rust-lang#154853 (mgca: Register `ConstArgHasType` when normalizing projection consts)
 - rust-lang#155527 (Replace printables table with `unicode_data.rs` tables)
 - rust-lang#156629 (Stabilize `core::range::{legacy, RangeFull, RangeTo}`)
 - rust-lang#157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - rust-lang#157282 (Fix post-monomorphization error note race in the parallel frontend)
 - rust-lang#157352 (Make the retained dep graph deterministic under the parallel frontend)
 - rust-lang#157601 (Emit error for unused target expression in glob and list delegations)
 - rust-lang#157611 (Update `browser-ui-test` version to `0.24.0`)
 - rust-lang#157620 (Add a strategy FnMut to inject behavior into the flush cycle)
 - rust-lang#157645 (Windows TLS - Only register the `atexit` hook when `cleanup` can be unloaded)
 - rust-lang#157646 (Keep rename-imported main alive in dead-code analysis under `--test`)
 - rust-lang#157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - rust-lang#157719 (resolve: Partially revert "Remove a special case for dummy imports")
 - rust-lang#155153 (Ensure Send/Sync is not implemented for std::env::Vars{,Os})
 - rust-lang#155198 (fix(mgca): Allow specifying generic args (of enum) on enum itself in unit & tuple variant constructions in (direct) const args)
 - rust-lang#155323 (refactor `TypeRelativePath::AssocItem` to use `AliasTerm`)
 - rust-lang#156497 (fix-155516: Don't suggest wrong unwrap expect)
 - rust-lang#156583 (Support defaults for static EIIs)
 - rust-lang#157013 (Ensure inferred let pattern types are well-formed)
 - rust-lang#157196 (Only suggest reborrowing a moved value where the reborrow is valid)
 - rust-lang#157230 (borrowck: avoid ICE describing fields on generic params)
 - rust-lang#157288 (platform support: add SNaN erratum to MIPS targets)
 - rust-lang#157330 (remove `IsTypeConst` from `hir::TraitItemKind`)
 - rust-lang#157350 (compiletest: ignore SVG `y` offset in by-lines comparison)
 - rust-lang#157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - rust-lang#157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`)
 - rust-lang#157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - rust-lang#157691 (Move symbol hiding code to a new file)
 - rust-lang#157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - rust-lang#157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - rust-lang#157699 (Arg splat experiment - hir FnDecl impl)

Rollup of 31 pull requests

Successful merges:

 - rust-lang#141030 (Expand free alias types during variance computation)
 - rust-lang#154853 (mgca: Register `ConstArgHasType` when normalizing projection consts)
 - rust-lang#155527 (Replace printables table with `unicode_data.rs` tables)
 - rust-lang#156629 (Stabilize `core::range::{legacy, RangeFull, RangeTo}`)
 - rust-lang#157280 (traits: Allow escaping self types in ExistentialTraitRef::with_self_ty)
 - rust-lang#157282 (Fix post-monomorphization error note race in the parallel frontend)
 - rust-lang#157352 (Make the retained dep graph deterministic under the parallel frontend)
 - rust-lang#157601 (Emit error for unused target expression in glob and list delegations)
 - rust-lang#157611 (Update `browser-ui-test` version to `0.24.0`)
 - rust-lang#157620 (Add a strategy FnMut to inject behavior into the flush cycle)
 - rust-lang#157645 (Windows TLS - Only register the `atexit` hook when `cleanup` can be unloaded)
 - rust-lang#157646 (Keep rename-imported main alive in dead-code analysis under `--test`)
 - rust-lang#157647 (Start using comptime for reflection intrinsics and their wrapper functions)
 - rust-lang#157719 (resolve: Partially revert "Remove a special case for dummy imports")
 - rust-lang#155153 (Ensure Send/Sync is not implemented for std::env::Vars{,Os})
 - rust-lang#155198 (fix(mgca): Allow specifying generic args (of enum) on enum itself in unit & tuple variant constructions in (direct) const args)
 - rust-lang#155323 (refactor `TypeRelativePath::AssocItem` to use `AliasTerm`)
 - rust-lang#156497 (fix-155516: Don't suggest wrong unwrap expect)
 - rust-lang#156583 (Support defaults for static EIIs)
 - rust-lang#157013 (Ensure inferred let pattern types are well-formed)
 - rust-lang#157196 (Only suggest reborrowing a moved value where the reborrow is valid)
 - rust-lang#157230 (borrowck: avoid ICE describing fields on generic params)
 - rust-lang#157288 (platform support: add SNaN erratum to MIPS targets)
 - rust-lang#157330 (remove `IsTypeConst` from `hir::TraitItemKind`)
 - rust-lang#157350 (compiletest: ignore SVG `y` offset in by-lines comparison)
 - rust-lang#157355 (Add `or_try_*` variants for `HashMap` and `BTreeMap` Entry APIs)
 - rust-lang#157577 (Fix parser error recovery treating 'dyn' as a strict keyword in Rust 2015 when used in `dyn + dyn`)
 - rust-lang#157670 (Rename `errors.rs` file to `diagnostics.rs` (4/N))
 - rust-lang#157691 (Move symbol hiding code to a new file)
 - rust-lang#157700 (Rename `errors.rs` file to `diagnostics.rs` (5/N))
 - rust-lang#157703 (Fix doc link to Instant sub in saturating caveat)

Failed merges:

 - rust-lang#157699 (Arg splat experiment - hir FnDecl impl)