When the obligation that couldn't be fulfilled is specific to a nested
obligation, maintain both the nested and parent obligations around for
more accurate and detailed error reporting.
Surface associated type projection bounds that could not be fulfilled in
E0599 errors. Always present the list of unfulfilled trait bounds,
regardless of whether we're pointing at the ADT or trait that didn't
satisfy it.
parser: `token` -> `normalized_token`, `nonnormalized_token` -> `token`
So, after https://github.com/rust-lang/rust/pull/69006, its follow-ups and an attempt to remove `Parser::prev_span` I came to the conclusion that the unnormalized token and its span is what you want in most cases, so it should be default.
Normalization only makes difference in few cases where we are checking against `token::Ident` or `token::Lifetime` specifically.
This PR uses `normalized_token` for those cases.
Using normalization explicitly means that people writing code should remember about `NtIdent` and `NtLifetime` in general. (That is alleviated by the fact that `token.ident()` and `fn parse_ident_*` are already written.)
Remembering about `NtIdent`, was, however, already the case, kind of, because the implicit normalization was performed only for the current/previous token, but not for things like `look_ahead`.
As a result, most of token classification methods in `token.rs` already take `NtIdent` into account (this PR fixes a few pre-existing minor mistakes though).
The next step is removing `normalized(_prev)_token` entirely and replacing it with `token.ident()` (mostly) and `token.normalize()` (occasionally).
I want to make it a separate PR for that and run it though perf.
`normalized_token` filled on every bump has both a potential to avoid repeated normalization, and to do unnecessary work in advance (it probably doesn't matter anyway, the normalization is very cheap).
r? @Centril
instantiate_value_path: on `SelfCtor`, avoid unconstrained tyvars
Fixes https://github.com/rust-lang/rust/issues/69306.
On `Self(...)` (that is, a `Res::SelfCtor`), do not use `self.impl_self_ty(...)`. The problem with that method is that it creates unconstrained inference variables for type parameters in the `impl` (e.g. `impl<T> S0<T>`). These variables then eventually get substituted for something else when they come in contact with the expected type (e.g. `S0<u8>`) or merely the arguments passed to the tuple constructor (e.g. the `0` in `Self(0)`).
Instead of using `self.impl_self_ty(...)`, we instead merely use `let ty = self.normalize_ty(span, tcx.at(span).type_of(impl_def_id));` to get the rewritten `res`.
r? @eddyb
Account for bounds and asociated items when denying `_`
Fix#68801, #69204. Follow up to #67597 and #68071.
Output for the original ICE report:
```
Checking vinoteca v5.0.0 (/Users/ekuber/workspace/vinoteca)
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
--> src/producers.rs:43:70
|
43 | pub fn top<Table: diesel::Table + diesel::query_dsl::InternalJoinDsl<_, diesel::query_source::joins::Inner, _>>(table: Table, limit: usize, connection: DbConn) -> RestResult<Vec<TopWineType>> {
| ^ not allowed in type signatures ^ not allowed in type signatures
error: aborting due to previous error
```
Rollup of 9 pull requests
Successful merges:
- #69379 (Fail on multiple declarations of `main`.)
- #69430 (librustc_typeck: remove loop that never actually loops)
- #69449 (Do not ping PR reviewers in toolstate breakage)
- #69491 (rustc_span: Add `Symbol::to_ident_string` for use in diagnostic messages)
- #69495 (don't take redundant references to operands)
- #69496 (use find(x) instead of filter(x).next())
- #69501 (note that find(f) is equivalent to filter(f).next() in the docs.)
- #69527 (Ignore untracked paths when running `rustfmt` on repository.)
- #69529 (don't use .into() to convert types into identical types.)
Failed merges:
r? @ghost
Fail on multiple declarations of `main`.
Closes#67946.
Previously, when inserting the entry function, we only checked for
duplicate _definitions_ of `main`. However, it's possible to cause
problems even only having a duplicate _declaration_. For example,
shadowing `main` using an extern block isn't caught by the current
check, and causes an assertion failure down the line in in LLVM code.
r? @pnkfelix
Revert "Mark attributes consumed by `check_mod_attrs` as normal"
This reverts commit d78b22f35e.
Those changes were incompatible with incremental compilation since the
effect `check_mod_attrs` has with respect to marking the attributes as
used is neither persisted nor recomputed.
Backport only: avoid ICE on bad placeholder type
#69148 has a proper fix, but it is too big to backport.
This change avoids the ICE by actually emitting an appropriate error. The
output will be duplicated in some cases, but that's better than the
avoidable ICE.
r? @Centril
This reverts commit d78b22f35e.
Those changes were incompatible with incremental compilation since the
effect `check_mod_attrs` has with respect to marking the attributes as
used is neither persisted nor recomputed.
Generalized article_and_description
r? @matthewjasper
The logic of finding the right word and article to print seems to be repeated elsewhere... this is an experimental method to unify this logic...
Mark attributes consumed by `check_mod_attrs` as normal
Take advantage of the fact that `check_mod_attrs` marks attributes as
used and change their type to normal, so that any remaining uses will be
warned about by the unused attribute lint.
Add primitive module to libcore
This re-exports the primitive types from libcore at `core::primitive` to allow
macro authors to have a reliable location to use them from.
Fixes#44865
