Improve the help message + add a help span
This would close#10410, because it applies the general consensus achieved in that issue (that replacing `let _ = ...` to `_ = ...` doesn't present any benefits).
I also added a little help message span.
changelog:[`let_underscore_untyped`]: Fix the help message confusion + add a help message span.
check for `..` pattern in `redundant_pattern_matching`
The `redundant_pattern_matching` lint currently checks for `if let Some(_) = ...`, but not for `if let Some(..) = ...`.
This PR makes sure to also check for the `..` pattern in tuple structs.
It also found one such instance in clippy itself so that shows it's worth checking for this pattern as well 😅
changelog: [`redundant_pattern_matching`]: check for `..` pattern in tuple structs
Fix false positive in `allow_attributes`
This would emit a warning if used in a proc-macro with the feature `lint_reasons` enabled. This is now fixed.
changelog: [`allow_attributes`]: Don't lint if in external macro
Ignore `shadow` warns in code from macro expansions
This PR fixes https://github.com/rust-lang/rust-clippy/issues/9757
I am in doubt if just looking for `pat.span.from_expansion()` would be sufficient instead of looking for both `pat.span.desugaring_kind().is_some()` or `pat.span.from_expansion()`. The tests (including the new one) passes if I leave the only `if pat.span.from_expansion()`. Any feedbacks?
Also, this is my first PR here, sorry for anything and thanks for the patience!
changelog: [`shadow_same`, `shadow_reuse`, `shadow_unrelated`]: avoiding warns in macro-generated code
New lint: detect `if` expressions with simple boolean assignments to the same target
Closes#10430
changelog: [`needless_bool_assign`] new lint to detect simple boolean assignment to the same target in `if` branches
use `is_inside_const_context` for `in_constant` util fn
Fixes#10452.
This PR improves the `in_constant` util function to detect more cases of const contexts. Previously this function would not detect cases like expressions in array length position or expression in an inline const block `const { .. }`.
changelog: [`bool_to_int_with_if`]: recognize array length operand as being in a const context and don't suggest `usize::from` there
Don't suggest `suboptimal_flops` unavailable in nostd
Fixes#10634
changelog: Enhancement: [`suboptimal_flops`]: Do not suggest `{f32,f64}::abs()` or `{f32,f64}::mul_add()` in a `no_std`-environment.
Add `items_after_test_module` lint
Resolves task *3* of #10506, alongside *1* resolved at #10543 in an effort to help standarize a little bit more testing modules.
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changelog:[`items_after_test_module`]: Added the lint.
make [`len_zero`] lint not spanning over parenthesis
sorry it should be a quick fix but I was caught up by other stuffs last couple weeks 🤦♂️
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fixes: #10529
changelog: make [`len_zero`] lint not spanning over parenthesis
Suppress the triggering of some lints in derived structures
Fixes#10185Fixes#10417
For `integer_arithmetic`, `arithmetic_side_effects` and `shadow_reuse`.
* ~~Not sure how to test these use-cases so feel free to point any method or any related PR.~~
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changelog: FP: [`integer_arithmetic`], [`arithmetic_side_effects`]: No longer lint inside proc macros
[#10203](https://github.com/rust-lang/rust-clippy/pull/10203)
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Add size-parameter to unecessary_box_returns
Fixes#10641
This adds a configuration-knob to the `unecessary_box_returns`-lint which allows _not_ linting a `fn() -> Box<T>` if `T` is "large". The default byte size above which we no longer lint is 128 bytes (due to https://github.com/rust-lang/rust-clippy/issues/4652#issue-505670554, also used in #9373). The overall rational is given in #10641.
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changelog: Enhancement: [`unnecessary_box_returns`]: Added new lint configuration `unnecessary-box-size` to set the maximum size of `T` in `Box<T>` to be linted
[#10651](https://github.com/rust-lang/rust-clippy/pull/10651)
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resolve: Pre-compute non-reexport module children
Instead of repeating the same logic by walking HIR during metadata encoding.
The only difference is that we are no longer encoding `macro_rules` items, but we never currently need them as a part of this list. They can be encoded separately if this need ever arises.
`module_reexports` is also un-querified, because I don't see any reasons to make it a query, only overhead.
Instead of repeating the same logic by walking HIR during metadata encoding.
The only difference is that we are no longer encoding `macro_rules` items, but we never currently need them as a part of this list.
They can be encoded separately if this need ever arises.
`module_reexports` is also un-querified, because I don't see any reasons to make it a query, only overhead.
