false positives fixes of `implicit_return`
- Handle returning macro statements properly (remove "this error originates in a macro outside of the current crate")
- Handle functions that return never type
- Handle functions that panic but do not return never type
changelog: Fix false positives in `implicit_return` lint pertaining to macros and panics
Implement lint for inherent to_string() method.
Fixes#4247
changelog: Implement two new lints: `inherent_to_string` and `inherent_to_string_shadow_display`
1) Emits a warning if a type implements an inherent method `to_string(&self) -> String`
2) Emits an error if a type implements an inherent method `to_string(&self) -> String` and also implements the `Display` trait
UI Test Cleanup: Split up checked_unwrap tests
Let's slowly bring that ticket closer to the finish line 🐌🏁
This splits up `tests/ui/checked_unwrap.rs` into:
* `tests/ui/checked_unwrap/complex.rs`
* `tests/ui/checked_unwrap/simple.rs`
Based on the naming of the methods in the tests.
changelog: none
cc #2038
This splits up `tests/ui/checked_unwrap.rs` into:
* `tests/ui/checked_unwrap/complex.rs`
* `tests/ui/checked_unwrap/simple.rs`
Based on the naming of the methods in the tests.
cc #2038
Improve cast_ptr_alignment lint
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* print alignment in bytes in the lint message
* ignore ZST left-hand types
Fixes#3797 and #4256
changelog:
* `cast_ptr_alignment`: Print alignment in bytes in the lint message
* `cast_ptr_alignment`: Ignore casting from ZST left-hand types
Avoid reporting string_lit_as_bytes for long strings
Port of @jens1o code ([b76f939][jens1o_commit])
Fixes#1208
[jens1o_commit]: b76f939ac2
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changelog: bugfix for long strings as bytes
This is in preperation for https://github.com/rust-lang/rust/pull/62150
Also allows deprecations in preperations for intrinsics::init being deprecated, which is a planned future step.
