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Auto merge of #12447 - MarcusGrass:mg/fix-12438-regression, r=y21

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Fix #12438 std_instead_of_core regression

Fixes #12438.

Boy-scouting removed two paths that checks for duplication since I thought they were unused. However, that's just because I didn't spot it in the diff.

I installed [difftastic](https://github.com/Wilfred/difftastic) and ran it on the old one:

![image](https://github.com/rust-lang/rust-clippy/assets/34198073/5c51276c-055a-49a3-9425-6f7da0590fb0)

And the new one (fixed):

![image](https://github.com/rust-lang/rust-clippy/assets/34198073/6e10f29c-6d6b-4f64-893f-de526424f1cd)

New one (stderr):
![image](https://github.com/rust-lang/rust-clippy/assets/34198073/c4c07776-ee0f-47ba-996f-6b632de47c81)

Good teachings for the future when inspecting diffs with a lot of line changes, should've thought of that before, sorry for the trouble!

changelog: [`std_instead_of_core`] Fix false positive for crates that are in `std` but not `core`
This commit is contained in:
bors 2024-03-09 21:23:38 +00:00
commit 7ee75f896f
3 changed files with 4 additions and 8 deletions
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2
clippy_lints/src/std_instead_of_core.rs
View File

@ -109,6 +109,7 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports {
sym::core => (STD_INSTEAD_OF_CORE, "std", "core"),
sym::alloc => (STD_INSTEAD_OF_ALLOC, "std", "alloc"),
_ => {
self.prev_span = first_segment.ident.span;
return;
},
},
@ -116,6 +117,7 @@ impl<'tcx> LateLintPass<'tcx> for StdReexports {
if cx.tcx.crate_name(def_id.krate) == sym::core {
(ALLOC_INSTEAD_OF_CORE, "alloc", "core")
} else {
self.prev_span = first_segment.ident.span;
return;
}
},

2
tests/ui/std_instead_of_core.fixed
View File

@ -17,7 +17,7 @@ fn std_instead_of_core() {
use ::core::hash::Hash;
//~^ ERROR: used import from `std` instead of `core`
// Don't lint on `env` macro
use core::env;
use std::env;
// Multiple imports
use core::fmt::{Debug, Result};

8
tests/ui/std_instead_of_core.stderr
View File

@ -13,12 +13,6 @@ error: used import from `std` instead of `core`
LL | use ::std::hash::Hash;
| ^^^ help: consider importing the item from `core`: `core`
error: used import from `std` instead of `core`
--> tests/ui/std_instead_of_core.rs:20:9
|
LL | use std::env;
| ^^^ help: consider importing the item from `core`: `core`
error: used import from `std` instead of `core`
--> tests/ui/std_instead_of_core.rs:23:9
|
@ -85,5 +79,5 @@ LL | use alloc::slice::from_ref;
= note: `-D clippy::alloc-instead-of-core` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::alloc_instead_of_core)]`
error: aborting due to 13 previous errors
error: aborting due to 12 previous errors