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Dropped in favor a hard error in RUST-127907.
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directly
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This variant doesn't appear to have ever been used.
There's a matching message in `rustc_resolve`, that used to have a FIXME
for porting it to the new diagnostic infrastructure, but that message is
using `feature_err`, which doesn't use buffered lints. Thus, even when
that does get ported, it won't use `BuiltinLintDiag`.
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`rustc_lint_defs` uses `rustc_hir` solely for the `Namespace` type,
which it only needs the static description from. Use the static
description directly, to eliminate the dependency on `rustc_hir`.
This reduces a long dependency chain:
- Many things depend on `rustc_errors`
- `rustc_errors` depends on `rustc_lint_defs`
- `rustc_lint_defs` depended on `rustc_hir` prior to this commit
- `rustc_hir` depends on `rustc_target`
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Remove unused `#[must_use]`
Self-explanatory
Fixes https://github.com/rust-lang/rust/issues/145257
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This was attempted in [1] then reverted in [2] because of fallout.
Recently, this was made an edition-dependent error in [3].
Make missing fragment specifiers an unconditional error again.
[1]: https://github.com/rust-lang/rust/pull/75516
[2]: https://github.com/rust-lang/rust/pull/80210
[3]: https://github.com/rust-lang/rust/pull/128006
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Report text_direction_codepoint_in_literal when parsing
The lint is now reported in code that gets removed/modified/duplicated by macro expansion, and spans are more accurate so we don't get ICEs from trying to split a span in the middle of a character.
This removes support for lint level attributes for `text_direction_codepoint_in_literal` except at the crate level, I don't think that there's an easy way around this when the lint can be reported on code that's removed by `cfg` or that is only in the input of a macro.
Fixes #140281
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Use `cfg_attr_trace` in AST with a placeholder attribute for accurate suggestion
In rust-lang/rust#138515, we insert a placeholder attribute so that checks for attributes can still know about the placement of `cfg` attributes. When we suggest removing items with `cfg_attr`s (fix rust-lang/rust#56328) and make them verbose. We tweak the wording of the existing "unused `extern crate`" lint.
```
warning: unused `extern crate`
--> $DIR/removing-extern-crate.rs:9:1
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LL | extern crate removing_extern_crate as foo;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused
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note: the lint level is defined here
--> $DIR/removing-extern-crate.rs:6:9
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LL | #![warn(rust_2018_idioms)]
| ^^^^^^^^^^^^^^^^
= note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
help: remove the unused `extern crate`
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LL - #[cfg_attr(test, macro_use)]
LL - extern crate removing_extern_crate as foo;
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```
r? `@petrochenkov`
try-job: x86_64-gnu-aux
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PR 138515, we insert a placeholder attribute so that checks for attributes can still know about the placement of `cfg` attributes. When we suggest removing items with `cfg_attr`s (fix Issue 56328) and make them verbose. We tweak the wording of the existing "unused `extern crate`" lint.
```
warning: unused extern crate
--> $DIR/removing-extern-crate.rs:9:1
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LL | extern crate removing_extern_crate as foo;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused
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note: the lint level is defined here
--> $DIR/removing-extern-crate.rs:6:9
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LL | #![warn(rust_2018_idioms)]
| ^^^^^^^^^^^^^^^^
= note: `#[warn(unused_extern_crates)]` implied by `#[warn(rust_2018_idioms)]`
help: remove the unused `extern crate`
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LL - #[cfg_attr(test, macro_use)]
LL - extern crate removing_extern_crate as foo;
LL +
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```
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- The lint is now reported in code that gets removed/modified/duplicated
by macro expansion.
- Spans are more accurate
- Fixes #140281
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```
warning: cannot find macro `in_root` in the crate root
--> $DIR/key-value-expansion-scope.rs:1:10
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LL | #![doc = in_root!()]
| ^^^^^^^ not found in the crate root
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #124535 <https://github.com/rust-lang/rust/issues/124535>
= help: import `macro_rules` with `use` to make it callable above its definition
= note: `#[warn(out_of_scope_macro_calls)]` on by default
```
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Most of these just format the ABI string, so... just format ExternAbi?
This makes it more consistent and less jank when we can do it.
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This is the next step in getting rid of the broken C abi for
wasm32-unknown-unknown.
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`rustc_span::symbol` defines some things that are re-exported from
`rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some
closely related things such as `Ident` and `kw`. So you can do `use
rustc_span::{Symbol, sym}` but you have to do `use
rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good
reason.
This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`,
and changes many `rustc_span::symbol::` qualifiers in `compiler/` to
`rustc_span::`. This is a 200+ net line of code reduction, mostly
because many files with two `use rustc_span` items can be reduced to
one.
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