diff options
4 files changed, 34 insertions, 2 deletions
diff --git a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs index 1ebb71e251a..78656ace831 100644 --- a/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs +++ b/clippy_lints/src/methods/map_with_unused_argument_over_ranges.rs @@ -3,7 +3,7 @@ use clippy_utils::diagnostics::span_lint_and_then; use clippy_utils::msrvs::{self, Msrv}; use clippy_utils::source::snippet_with_applicability; use clippy_utils::sugg::Sugg; -use clippy_utils::{eager_or_lazy, higher, usage}; +use clippy_utils::{eager_or_lazy, higher, std_or_core, usage}; use rustc_ast::LitKind; use rustc_ast::ast::RangeLimits; use rustc_data_structures::packed::Pu128; @@ -75,6 +75,7 @@ pub(super) fn check( } = body_hir && !usage::BindingUsageFinder::are_params_used(cx, body_hir) && let Some(count) = extract_count_with_applicability(cx, range, &mut applicability) + && let Some(exec_context) = std_or_core(cx) { let method_to_use_name; let new_span; @@ -105,7 +106,7 @@ pub(super) fn check( let mut parts = vec![ ( receiver.span.to(method_call_span), - format!("std::iter::{method_to_use_name}"), + format!("{exec_context}::iter::{method_to_use_name}"), ), new_span, ]; diff --git a/tests/ui/map_with_unused_argument_over_ranges_nostd.fixed b/tests/ui/map_with_unused_argument_over_ranges_nostd.fixed new file mode 100644 index 00000000000..65e59774905 --- /dev/null +++ b/tests/ui/map_with_unused_argument_over_ranges_nostd.fixed @@ -0,0 +1,8 @@ +#![warn(clippy::map_with_unused_argument_over_ranges)] +#![no_std] +extern crate alloc; +use alloc::vec::Vec; + +fn nostd(v: &mut [i32]) { + let _: Vec<_> = core::iter::repeat_n(3 + 1, 10).collect(); +} diff --git a/tests/ui/map_with_unused_argument_over_ranges_nostd.rs b/tests/ui/map_with_unused_argument_over_ranges_nostd.rs new file mode 100644 index 00000000000..dda7a69b33f --- /dev/null +++ b/tests/ui/map_with_unused_argument_over_ranges_nostd.rs @@ -0,0 +1,8 @@ +#![warn(clippy::map_with_unused_argument_over_ranges)] +#![no_std] +extern crate alloc; +use alloc::vec::Vec; + +fn nostd(v: &mut [i32]) { + let _: Vec<_> = (0..10).map(|_| 3 + 1).collect(); +} diff --git a/tests/ui/map_with_unused_argument_over_ranges_nostd.stderr b/tests/ui/map_with_unused_argument_over_ranges_nostd.stderr new file mode 100644 index 00000000000..d47f3d09175 --- /dev/null +++ b/tests/ui/map_with_unused_argument_over_ranges_nostd.stderr @@ -0,0 +1,15 @@ +error: map of a closure that does not depend on its parameter over a range + --> tests/ui/map_with_unused_argument_over_ranges_nostd.rs:7:21 + | +LL | let _: Vec<_> = (0..10).map(|_| 3 + 1).collect(); + | ^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::map-with-unused-argument-over-ranges` implied by `-D warnings` + = help: to override `-D warnings` add `#[allow(clippy::map_with_unused_argument_over_ranges)]` +help: remove the explicit range and use `repeat_n` + | +LL | let _: Vec<_> = core::iter::repeat_n(3 + 1, 10).collect(); + | ~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~ + +error: aborting due to 1 previous error + |