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Only suggest #[allow] for --warn and --deny lint level flags

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This commit is contained in:
Alex Macleod 2024-08-08 13:09:58 +00:00
parent d3a393932e
commit 9289f5691b
8 changed files with 5 additions and 10 deletions
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2
compiler/rustc_middle/src/lint.rs
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@ -228,11 +228,13 @@ pub fn explain_lint_level_source(
err.note_once(format!(
"`{flag} {hyphen_case_lint_name}` implied by `{flag} {hyphen_case_flag_val}`"
));
if matches!(orig_level, Level::Warn | Level::Deny) {
err.help_once(format!(
"to override `{flag} {hyphen_case_flag_val}` add `#[allow({name})]`"
));
}
}
}
LintLevelSource::Node { name: lint_attr_name, span, reason, .. } => {
if let Some(rationale) = reason {
err.note(rationale.to_string());

1
tests/ui/lint/command-line-lint-group-forbid.stderr
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@ -5,7 +5,6 @@ LL | let _InappropriateCamelCasing = true;
| ^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_inappropriate_camel_casing`
|
= note: `-F non-snake-case` implied by `-F bad-style`
= help: to override `-F bad-style` add `#[allow(non_snake_case)]`
error: aborting due to 1 previous error

1
tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr
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@ -7,7 +7,6 @@ LL | 0...100 => true,
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `--force-warn ellipsis-inclusive-range-patterns` implied by `--force-warn rust-2021-compatibility`
= help: to override `--force-warn rust-2021-compatibility` add `#[allow(ellipsis_inclusive_range_patterns)]`
warning: 1 warning emitted

1
tests/ui/lint/force-warn/lint-group-allow-warnings.stderr
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@ -5,7 +5,6 @@ LL | pub fn FUNCTION() {}
| ^^^^^^^^ help: convert the identifier to snake case: `function`
|
= note: `--force-warn non-snake-case` implied by `--force-warn nonstandard-style`
= help: to override `--force-warn nonstandard-style` add `#[allow(non_snake_case)]`
warning: 1 warning emitted

1
tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr
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@ -7,7 +7,6 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
= help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
help: if this is an object-safe trait, use `dyn`
|
LL | pub fn function(_x: Box<dyn SomeTrait>) {}

1
tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr
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@ -7,7 +7,6 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
= help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
help: if this is an object-safe trait, use `dyn`
|
LL | pub fn function(_x: Box<dyn SomeTrait>) {}

1
tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr
View File

@ -7,7 +7,6 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
= help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
help: if this is an object-safe trait, use `dyn`
|
LL | pub fn function(_x: Box<dyn SomeTrait>) {}

1
tests/ui/lint/group-forbid-always-trumps-cli.stderr
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@ -5,7 +5,6 @@ LL | let x = 1;
| ^ help: if this is intentional, prefix it with an underscore: `_x`
|
= note: `-F unused-variables` implied by `-F unused`
= help: to override `-F unused` add `#[allow(unused_variables)]`
error: aborting due to 1 previous error