diff options
28 files changed, 61 insertions, 285 deletions
diff --git a/.github/driver.sh b/.github/driver.sh index 5a81b411291..2874aaf2110 100755 --- a/.github/driver.sh +++ b/.github/driver.sh @@ -47,9 +47,9 @@ unset CARGO_MANIFEST_DIR # Run a lint and make sure it produces the expected output. It's also expected to exit with code 1 # FIXME: How to match the clippy invocation in compile-test.rs? -./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/string_to_string.rs 2>string_to_string.stderr && exit 1 -sed -e "/= help: for/d" string_to_string.stderr > normalized.stderr -diff -u normalized.stderr tests/ui/string_to_string.stderr +./target/debug/clippy-driver -Dwarnings -Aunused -Zui-testing --emit metadata --crate-type bin tests/ui/char_lit_as_u8.rs 2>char_lit_as_u8.stderr && exit 1 +sed -e "/= help: for/d" char_lit_as_u8.stderr > normalized.stderr +diff -u normalized.stderr tests/ui/char_lit_as_u8.stderr # make sure "clippy-driver --rustc --arg" and "rustc --arg" behave the same SYSROOT=$(rustc --print sysroot) diff --git a/clippy_lints/src/blocks_in_conditions.rs b/clippy_lints/src/blocks_in_conditions.rs index 011962846cb..10fe1a4174f 100644 --- a/clippy_lints/src/blocks_in_conditions.rs +++ b/clippy_lints/src/blocks_in_conditions.rs @@ -100,8 +100,7 @@ impl<'tcx> LateLintPass<'tcx> for BlocksInConditions { cond.span, BRACED_EXPR_MESSAGE, "try", - snippet_block_with_applicability(cx, ex.span, "..", Some(expr.span), &mut applicability) - .to_string(), + snippet_block_with_applicability(cx, ex.span, "..", Some(expr.span), &mut applicability), applicability, ); } diff --git a/clippy_lints/src/copies.rs b/clippy_lints/src/copies.rs index 4bd34527d21..4fdb497950f 100644 --- a/clippy_lints/src/copies.rs +++ b/clippy_lints/src/copies.rs @@ -235,9 +235,9 @@ fn lint_branches_sharing_code<'tcx>( let cond_snippet = reindent_multiline(&snippet(cx, cond_span, "_"), false, None); let cond_indent = indent_of(cx, cond_span); let moved_snippet = reindent_multiline(&snippet(cx, span, "_"), true, None); - let suggestion = moved_snippet.to_string() + "\n" + &cond_snippet + "{"; + let suggestion = moved_snippet + "\n" + &cond_snippet + "{"; let suggestion = reindent_multiline(&suggestion, true, cond_indent); - (replace_span, suggestion.to_string()) + (replace_span, suggestion) }); let end_suggestion = res.end_span(last_block, sm).map(|span| { let moved_snipped = reindent_multiline(&snippet(cx, span, "_"), true, None); @@ -253,7 +253,7 @@ fn lint_branches_sharing_code<'tcx>( .then_some(range.start - 4..range.end) }) .map_or(span, |range| range.with_ctxt(span.ctxt())); - (span, suggestion.to_string()) + (span, suggestion.clone()) }); let (span, msg, end_span) = match (&start_suggestion, &end_suggestion) { diff --git a/clippy_lints/src/declared_lints.rs b/clippy_lints/src/declared_lints.rs index c3f8e02b4c0..a457e032ba0 100644 --- a/clippy_lints/src/declared_lints.rs +++ b/clippy_lints/src/declared_lints.rs @@ -690,7 +690,6 @@ pub static LINTS: &[&::declare_clippy_lint::LintInfo] = &[ crate::strings::STRING_FROM_UTF8_AS_BYTES_INFO, crate::strings::STRING_LIT_AS_BYTES_INFO, crate::strings::STRING_SLICE_INFO, - crate::strings::STRING_TO_STRING_INFO, crate::strings::STR_TO_STRING_INFO, crate::strings::TRIM_SPLIT_WHITESPACE_INFO, crate::strlen_on_c_strings::STRLEN_ON_C_STRINGS_INFO, diff --git a/clippy_lints/src/deprecated_lints.rs b/clippy_lints/src/deprecated_lints.rs index 5204f73ea0a..88aebc3e6a1 100644 --- a/clippy_lints/src/deprecated_lints.rs +++ b/clippy_lints/src/deprecated_lints.rs @@ -34,6 +34,8 @@ declare_with_version! { DEPRECATED(DEPRECATED_VERSION) = [ ("clippy::replace_consts", "`min_value` and `max_value` are now deprecated"), #[clippy::version = "pre 1.29.0"] ("clippy::should_assert_eq", "`assert!(a == b)` can now print the values the same way `assert_eq!(a, b) can"), + #[clippy::version = "1.90.0"] + ("clippy::string_to_string", "`clippy:implicit_clone` covers those cases"), #[clippy::version = "pre 1.29.0"] ("clippy::unsafe_vector_initialization", "the suggested alternative could be substantially slower"), #[clippy::version = "pre 1.29.0"] diff --git a/clippy_lints/src/if_not_else.rs b/clippy_lints/src/if_not_else.rs index 25fed0d4dd1..e8afa69b537 100644 --- a/clippy_lints/src/if_not_else.rs +++ b/clippy_lints/src/if_not_else.rs @@ -81,7 +81,7 @@ impl LateLintPass<'_> for IfNotElse { e.span, msg, "try", - make_sugg(cx, &cond.kind, cond_inner.span, els.span, "..", Some(e.span)).to_string(), + make_sugg(cx, &cond.kind, cond_inner.span, els.span, "..", Some(e.span)), Applicability::MachineApplicable, ), _ => span_lint_and_help(cx, IF_NOT_ELSE, e.span, msg, None, help), diff --git a/clippy_lints/src/lib.rs b/clippy_lints/src/lib.rs index 792acec9e52..3e3b4253f80 100644 --- a/clippy_lints/src/lib.rs +++ b/clippy_lints/src/lib.rs @@ -665,7 +665,6 @@ pub fn register_lint_passes(store: &mut rustc_lint::LintStore, conf: &'static Co store.register_early_pass(|| Box::new(asm_syntax::InlineAsmX86IntelSyntax)); store.register_late_pass(|_| Box::new(empty_drop::EmptyDrop)); store.register_late_pass(|_| Box::new(strings::StrToString)); - store.register_late_pass(|_| Box::new(strings::StringToString)); store.register_late_pass(|_| Box::new(zero_sized_map_values::ZeroSizedMapValues)); store.register_late_pass(|_| Box::<vec_init_then_push::VecInitThenPush>::default()); store.register_late_pass(|_| Box::new(redundant_slicing::RedundantSlicing)); diff --git a/clippy_lints/src/manual_async_fn.rs b/clippy_lints/src/manual_async_fn.rs index abd1ac954cd..ba1ad599e11 100644 --- a/clippy_lints/src/manual_async_fn.rs +++ b/clippy_lints/src/manual_async_fn.rs @@ -83,7 +83,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn { format!("{} async {}", vis_snip, &header_snip[vis_snip.len() + 1..ret_pos]) }; - let body_snip = snippet_block(cx, closure_body.value.span, "..", Some(block.span)).to_string(); + let body_snip = snippet_block(cx, closure_body.value.span, "..", Some(block.span)); diag.multipart_suggestion( "make the function `async` and return the output of the future directly", diff --git a/clippy_lints/src/matches/match_single_binding.rs b/clippy_lints/src/matches/match_single_binding.rs index 9bbc6042fe1..82d5310663e 100644 --- a/clippy_lints/src/matches/match_single_binding.rs +++ b/clippy_lints/src/matches/match_single_binding.rs @@ -31,9 +31,7 @@ pub(crate) fn check<'a>(cx: &LateContext<'a>, ex: &Expr<'a>, arms: &[Arm<'_>], e let match_body = peel_blocks(arms[0].body); let mut app = Applicability::MaybeIncorrect; let ctxt = expr.span.ctxt(); - let mut snippet_body = snippet_block_with_context(cx, match_body.span, ctxt, "..", Some(expr.span), &mut app) - .0 - .to_string(); + let mut snippet_body = snippet_block_with_context(cx, match_body.span, ctxt, "..", Some(expr.span), &mut app).0; // Do we need to add ';' to suggestion ? if let Node::Stmt(stmt) = cx.tcx.parent_hir_node(expr.hir_id) diff --git a/clippy_lints/src/matches/single_match.rs b/clippy_lints/src/matches/single_match.rs index 7e530e98ac4..bcf079b7007 100644 --- a/clippy_lints/src/matches/single_match.rs +++ b/clippy_lints/src/matches/single_match.rs @@ -112,9 +112,7 @@ fn report_single_pattern( let (sugg, help) = if is_unit_expr(arm.body) { (String::new(), "`match` expression can be removed") } else { - let mut sugg = snippet_block_with_context(cx, arm.body.span, ctxt, "..", Some(expr.span), &mut app) - .0 - .to_string(); + let mut sugg = snippet_block_with_context(cx, arm.body.span, ctxt, "..", Some(expr.span), &mut app).0; if let Node::Stmt(stmt) = cx.tcx.parent_hir_node(expr.hir_id) && let StmtKind::Expr(_) = stmt.kind && match arm.body.kind { @@ -127,7 +125,7 @@ fn report_single_pattern( (sugg, "try") }; span_lint_and_then(cx, lint, expr.span, msg, |diag| { - diag.span_suggestion(expr.span, help, sugg.to_string(), app); + diag.span_suggestion(expr.span, help, sugg, app); note(diag); }); return; @@ -188,7 +186,7 @@ fn report_single_pattern( }; span_lint_and_then(cx, lint, expr.span, msg, |diag| { - diag.span_suggestion(expr.span, "try", sugg.to_string(), app); + diag.span_suggestion(expr.span, "try", sugg, app); note(diag); }); } diff --git a/clippy_lints/src/methods/implicit_clone.rs b/clippy_lints/src/methods/implicit_clone.rs index 9724463f0c0..adb2002feea 100644 --- a/clippy_lints/src/methods/implicit_clone.rs +++ b/clippy_lints/src/methods/implicit_clone.rs @@ -40,14 +40,12 @@ pub fn check(cx: &LateContext<'_>, method_name: Symbol, expr: &hir::Expr<'_>, re } /// Returns true if the named method can be used to clone the receiver. -/// Note that `to_string` is not flagged by `implicit_clone`. So other lints that call -/// `is_clone_like` and that do flag `to_string` must handle it separately. See, e.g., -/// `is_to_owned_like` in `unnecessary_to_owned.rs`. pub fn is_clone_like(cx: &LateContext<'_>, method_name: Symbol, method_def_id: hir::def_id::DefId) -> bool { match method_name { sym::to_os_string => is_diag_item_method(cx, method_def_id, sym::OsStr), sym::to_owned => is_diag_trait_item(cx, method_def_id, sym::ToOwned), sym::to_path_buf => is_diag_item_method(cx, method_def_id, sym::Path), + sym::to_string => is_diag_trait_item(cx, method_def_id, sym::ToString), sym::to_vec => cx .tcx .impl_of_method(method_def_id) diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs index bcd54557331..49ca81dafc2 100644 --- a/clippy_lints/src/methods/mod.rs +++ b/clippy_lints/src/methods/mod.rs @@ -5450,7 +5450,7 @@ impl Methods { implicit_clone::check(cx, name, expr, recv); } }, - (sym::to_os_string | sym::to_path_buf | sym::to_vec, []) => { + (sym::to_os_string | sym::to_path_buf | sym::to_string | sym::to_vec, []) => { implicit_clone::check(cx, name, expr, recv); }, (sym::type_id, []) => { diff --git a/clippy_lints/src/methods/unnecessary_sort_by.rs b/clippy_lints/src/methods/unnecessary_sort_by.rs index edd4ecd2b4a..85f7b38fb02 100644 --- a/clippy_lints/src/methods/unnecessary_sort_by.rs +++ b/clippy_lints/src/methods/unnecessary_sort_by.rs @@ -216,7 +216,7 @@ pub(super) fn check<'tcx>( { format!("{}::cmp::Reverse({})", std_or_core, trigger.closure_body) } else { - trigger.closure_body.to_string() + trigger.closure_body }, ), if trigger.reverse { diff --git a/clippy_lints/src/methods/unnecessary_to_owned.rs b/clippy_lints/src/methods/unnecessary_to_owned.rs index 769526d131b..50668cd4cec 100644 --- a/clippy_lints/src/methods/unnecessary_to_owned.rs +++ b/clippy_lints/src/methods/unnecessary_to_owned.rs @@ -621,8 +621,8 @@ fn is_cloned_or_copied(cx: &LateContext<'_>, method_name: Symbol, method_def_id: /// Returns true if the named method can be used to convert the receiver to its "owned" /// representation. fn is_to_owned_like<'a>(cx: &LateContext<'a>, call_expr: &Expr<'a>, method_name: Symbol, method_def_id: DefId) -> bool { - is_clone_like(cx, method_name, method_def_id) - || is_cow_into_owned(cx, method_name, method_def_id) + is_cow_into_owned(cx, method_name, method_def_id) + || (method_name != sym::to_string && is_clone_like(cx, method_name, method_def_id)) || is_to_string_on_string_like(cx, call_expr, method_name, method_def_id) } diff --git a/clippy_lints/src/redundant_else.rs b/clippy_lints/src/redundant_else.rs index a3be16ed858..79353dc9247 100644 --- a/clippy_lints/src/redundant_else.rs +++ b/clippy_lints/src/redundant_else.rs @@ -97,7 +97,7 @@ impl EarlyLintPass for RedundantElse { els.span.with_lo(then.span.hi()), "redundant else block", "remove the `else` block and move the contents out", - make_sugg(cx, els.span, "..", Some(expr.span)).to_string(), + make_sugg(cx, els.span, "..", Some(expr.span)), app, ); } diff --git a/clippy_lints/src/strings.rs b/clippy_lints/src/strings.rs index 1cda6f596f4..490e6c974ae 100644 --- a/clippy_lints/src/strings.rs +++ b/clippy_lints/src/strings.rs @@ -13,8 +13,6 @@ use rustc_middle::ty; use rustc_session::declare_lint_pass; use rustc_span::source_map::Spanned; -use std::ops::ControlFlow; - declare_clippy_lint! { /// ### What it does /// Checks for string appends of the form `x = x + y` (without @@ -413,125 +411,6 @@ impl<'tcx> LateLintPass<'tcx> for StrToString { declare_clippy_lint! { /// ### What it does - /// This lint checks for `.to_string()` method calls on values of type `String`. - /// - /// ### Why restrict this? - /// The `to_string` method is also used on other types to convert them to a string. - /// When called on a `String` it only clones the `String`, which can be more specifically - /// expressed with `.clone()`. - /// - /// ### Example - /// ```no_run - /// let msg = String::from("Hello World"); - /// let _ = msg.to_string(); - /// ``` - /// Use instead: - /// ```no_run - /// let msg = String::from("Hello World"); - /// let _ = msg.clone(); - /// ``` - #[clippy::version = "pre 1.29.0"] - pub STRING_TO_STRING, - restriction, - "using `to_string()` on a `String`, which should be `clone()`" -} - -declare_lint_pass!(StringToString => [STRING_TO_STRING]); - -fn is_parent_map_like(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<rustc_span::Span> { - if let Some(parent_expr) = get_parent_expr(cx, expr) - && let ExprKind::MethodCall(name, _, _, parent_span) = parent_expr.kind - && name.ident.name == sym::map - && let Some(caller_def_id) = cx.typeck_results().type_dependent_def_id(parent_expr.hir_id) - && (clippy_utils::is_diag_item_method(cx, caller_def_id, sym::Result) - || clippy_utils::is_diag_item_method(cx, caller_def_id, sym::Option) - || clippy_utils::is_diag_trait_item(cx, caller_def_id, sym::Iterator)) - { - Some(parent_span) - } else { - None - } -} - -fn is_called_from_map_like(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<rustc_span::Span> { - // Look for a closure as parent of `expr`, discarding simple blocks - let parent_closure = cx - .tcx - .hir_parent_iter(expr.hir_id) - .try_fold(expr.hir_id, |child_hir_id, (_, node)| match node { - // Check that the child expression is the only expression in the block - Node::Block(block) if block.stmts.is_empty() && block.expr.map(|e| e.hir_id) == Some(child_hir_id) => { - ControlFlow::Continue(block.hir_id) - }, - Node::Expr(expr) if matches!(expr.kind, ExprKind::Block(..)) => ControlFlow::Continue(expr.hir_id), - Node::Expr(expr) if matches!(expr.kind, ExprKind::Closure(_)) => ControlFlow::Break(Some(expr)), - _ => ControlFlow::Break(None), - }) - .break_value()?; - is_parent_map_like(cx, parent_closure?) -} - -fn suggest_cloned_string_to_string(cx: &LateContext<'_>, span: rustc_span::Span) { - span_lint_and_sugg( - cx, - STRING_TO_STRING, - span, - "`to_string()` called on a `String`", - "try", - "cloned()".to_string(), - Applicability::MachineApplicable, - ); -} - -impl<'tcx> LateLintPass<'tcx> for StringToString { - fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &Expr<'_>) { - if expr.span.from_expansion() { - return; - } - - match &expr.kind { - ExprKind::MethodCall(path, self_arg, [], _) => { - if path.ident.name == sym::to_string - && let ty = cx.typeck_results().expr_ty(self_arg) - && is_type_lang_item(cx, ty.peel_refs(), LangItem::String) - { - if let Some(parent_span) = is_called_from_map_like(cx, expr) { - suggest_cloned_string_to_string(cx, parent_span); - } else { - #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")] - span_lint_and_then( - cx, - STRING_TO_STRING, - expr.span, - "`to_string()` called on a `String`", - |diag| { - diag.help("consider using `.clone()`"); - }, - ); - } - } - }, - ExprKind::Path(QPath::TypeRelative(ty, segment)) => { - if segment.ident.name == sym::to_string - && let rustc_hir::TyKind::Path(QPath::Resolved(_, path)) = ty.peel_refs().kind - && let rustc_hir::def::Res::Def(_, def_id) = path.res - && cx - .tcx - .lang_items() - .get(LangItem::String) - .is_some_and(|lang_id| lang_id == def_id) - && let Some(parent_span) = is_parent_map_like(cx, expr) - { - suggest_cloned_string_to_string(cx, parent_span); - } - }, - _ => {}, - } - } -} - -declare_clippy_lint! { - /// ### What it does /// Warns about calling `str::trim` (or variants) before `str::split_whitespace`. /// /// ### Why is this bad? diff --git a/lintcheck/src/input.rs b/lintcheck/src/input.rs index 408a2e087af..1ed059d2fb1 100644 --- a/lintcheck/src/input.rs +++ b/lintcheck/src/input.rs @@ -117,7 +117,7 @@ pub fn read_crates(toml_path: &Path) -> (Vec<CrateWithSource>, RecursiveOptions) crate_sources.push(CrateWithSource { name: tk.name.clone(), source: CrateSource::CratesIo { - version: version.to_string(), + version: version.clone(), }, file_link: tk.file_link(DEFAULT_DOCS_LINK), options: tk.options.clone(), diff --git a/lintcheck/src/output.rs b/lintcheck/src/output.rs index d7fe0915121..1ecc3f7c249 100644 --- a/lintcheck/src/output.rs +++ b/lintcheck/src/output.rs @@ -220,7 +220,7 @@ fn print_stats(old_stats: HashMap<String, usize>, new_stats: HashMap<&String, us let same_in_both_hashmaps = old_stats .iter() .filter(|(old_key, old_val)| new_stats.get::<&String>(old_key) == Some(old_val)) - .map(|(k, v)| (k.to_string(), *v)) + .map(|(k, v)| (k.clone(), *v)) .collect::<Vec<(String, usize)>>(); let mut old_stats_deduped = old_stats; diff --git a/tests/ui/deprecated.rs b/tests/ui/deprecated.rs index 6b69bdd29ce..9743a83fb93 100644 --- a/tests/ui/deprecated.rs +++ b/tests/ui/deprecated.rs @@ -12,6 +12,7 @@ #![warn(clippy::regex_macro)] //~ ERROR: lint `clippy::regex_macro` #![warn(clippy::replace_consts)] //~ ERROR: lint `clippy::replace_consts` #![warn(clippy::should_assert_eq)] //~ ERROR: lint `clippy::should_assert_eq` +#![warn(clippy::string_to_string)] //~ ERROR: lint `clippy::string_to_string` #![warn(clippy::unsafe_vector_initialization)] //~ ERROR: lint `clippy::unsafe_vector_initialization` #![warn(clippy::unstable_as_mut_slice)] //~ ERROR: lint `clippy::unstable_as_mut_slice` #![warn(clippy::unstable_as_slice)] //~ ERROR: lint `clippy::unstable_as_slice` diff --git a/tests/ui/deprecated.stderr b/tests/ui/deprecated.stderr index 07e59d33d60..cd225da611c 100644 --- a/tests/ui/deprecated.stderr +++ b/tests/ui/deprecated.stderr @@ -61,35 +61,41 @@ error: lint `clippy::should_assert_eq` has been removed: `assert!(a == b)` can n LL | #![warn(clippy::should_assert_eq)] | ^^^^^^^^^^^^^^^^^^^^^^^^ -error: lint `clippy::unsafe_vector_initialization` has been removed: the suggested alternative could be substantially slower +error: lint `clippy::string_to_string` has been removed: `clippy:implicit_clone` covers those cases --> tests/ui/deprecated.rs:15:9 | +LL | #![warn(clippy::string_to_string)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: lint `clippy::unsafe_vector_initialization` has been removed: the suggested alternative could be substantially slower + --> tests/ui/deprecated.rs:16:9 + | LL | #![warn(clippy::unsafe_vector_initialization)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: lint `clippy::unstable_as_mut_slice` has been removed: `Vec::as_mut_slice` is now stable - --> tests/ui/deprecated.rs:16:9 + --> tests/ui/deprecated.rs:17:9 | LL | #![warn(clippy::unstable_as_mut_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: lint `clippy::unstable_as_slice` has been removed: `Vec::as_slice` is now stable - --> tests/ui/deprecated.rs:17:9 + --> tests/ui/deprecated.rs:18:9 | LL | #![warn(clippy::unstable_as_slice)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ error: lint `clippy::unused_collect` has been removed: `Iterator::collect` is now marked as `#[must_use]` - --> tests/ui/deprecated.rs:18:9 + --> tests/ui/deprecated.rs:19:9 | LL | #![warn(clippy::unused_collect)] | ^^^^^^^^^^^^^^^^^^^^^^ error: lint `clippy::wrong_pub_self_convention` has been removed: `clippy::wrong_self_convention` now covers this case via the `avoid-breaking-exported-api` config - --> tests/ui/deprecated.rs:19:9 + --> tests/ui/deprecated.rs:20:9 | LL | #![warn(clippy::wrong_pub_self_convention)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 15 previous errors +error: aborting due to 16 previous errors diff --git a/tests/ui/implicit_clone.fixed b/tests/ui/implicit_clone.fixed index d60d1cb0ec0..267514c5f3d 100644 --- a/tests/ui/implicit_clone.fixed +++ b/tests/ui/implicit_clone.fixed @@ -135,4 +135,10 @@ fn main() { } let no_clone = &NoClone; let _ = no_clone.to_owned(); + + let s = String::from("foo"); + let _ = s.clone(); + //~^ implicit_clone + let _ = s.clone(); + //~^ implicit_clone } diff --git a/tests/ui/implicit_clone.rs b/tests/ui/implicit_clone.rs index b96828f28c8..fba954026e7 100644 --- a/tests/ui/implicit_clone.rs +++ b/tests/ui/implicit_clone.rs @@ -135,4 +135,10 @@ fn main() { } let no_clone = &NoClone; let _ = no_clone.to_owned(); + + let s = String::from("foo"); + let _ = s.to_owned(); + //~^ implicit_clone + let _ = s.to_string(); + //~^ implicit_clone } diff --git a/tests/ui/implicit_clone.stderr b/tests/ui/implicit_clone.stderr index 1eb6ff1fe42..4cca9b0d0c0 100644 --- a/tests/ui/implicit_clone.stderr +++ b/tests/ui/implicit_clone.stderr @@ -67,5 +67,17 @@ error: implicitly cloning a `PathBuf` by calling `to_path_buf` on its dereferenc LL | let _ = pathbuf_ref.to_path_buf(); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `(**pathbuf_ref).clone()` -error: aborting due to 11 previous errors +error: implicitly cloning a `String` by calling `to_owned` on its dereferenced type + --> tests/ui/implicit_clone.rs:140:13 + | +LL | let _ = s.to_owned(); + | ^^^^^^^^^^^^ help: consider using: `s.clone()` + +error: implicitly cloning a `String` by calling `to_string` on its dereferenced type + --> tests/ui/implicit_clone.rs:142:13 + | +LL | let _ = s.to_string(); + | ^^^^^^^^^^^^^ help: consider using: `s.clone()` + +error: aborting due to 13 previous errors diff --git a/tests/ui/string_to_string.rs b/tests/ui/string_to_string.rs deleted file mode 100644 index 7c5bd8a897b..00000000000 --- a/tests/ui/string_to_string.rs +++ /dev/null @@ -1,21 +0,0 @@ -#![warn(clippy::string_to_string)] -#![allow(clippy::redundant_clone, clippy::unnecessary_literal_unwrap)] - -fn main() { - let mut message = String::from("Hello"); - let mut v = message.to_string(); - //~^ string_to_string - - let variable1 = String::new(); - let v = &variable1; - let variable2 = Some(v); - let _ = variable2.map(|x| { - println!(); - x.to_string() - }); - //~^^ string_to_string - - let x = Some(String::new()); - let _ = x.unwrap_or_else(|| v.to_string()); - //~^ string_to_string -} diff --git a/tests/ui/string_to_string.stderr b/tests/ui/string_to_string.stderr deleted file mode 100644 index 99eea06f18e..00000000000 --- a/tests/ui/string_to_string.stderr +++ /dev/null @@ -1,28 +0,0 @@ -error: `to_string()` called on a `String` - --> tests/ui/string_to_string.rs:6:17 - | -LL | let mut v = message.to_string(); - | ^^^^^^^^^^^^^^^^^^^ - | - = help: consider using `.clone()` - = note: `-D clippy::string-to-string` implied by `-D warnings` - = help: to override `-D warnings` add `#[allow(clippy::string_to_string)]` - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string.rs:14:9 - | -LL | x.to_string() - | ^^^^^^^^^^^^^ - | - = help: consider using `.clone()` - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string.rs:19:33 - | -LL | let _ = x.unwrap_or_else(|| v.to_string()); - | ^^^^^^^^^^^^^ - | - = help: consider using `.clone()` - -error: aborting due to 3 previous errors - diff --git a/tests/ui/string_to_string_in_map.fixed b/tests/ui/string_to_string_in_map.fixed deleted file mode 100644 index efc085539f1..00000000000 --- a/tests/ui/string_to_string_in_map.fixed +++ /dev/null @@ -1,20 +0,0 @@ -#![deny(clippy::string_to_string)] -#![allow(clippy::unnecessary_literal_unwrap, clippy::useless_vec, clippy::iter_cloned_collect)] - -fn main() { - let variable1 = String::new(); - let v = &variable1; - let variable2 = Some(v); - let _ = variable2.cloned(); - //~^ string_to_string - let _ = variable2.cloned(); - //~^ string_to_string - #[rustfmt::skip] - let _ = variable2.cloned(); - //~^ string_to_string - - let _ = vec![String::new()].iter().cloned().collect::<Vec<_>>(); - //~^ string_to_string - let _ = vec![String::new()].iter().cloned().collect::<Vec<_>>(); - //~^ string_to_string -} diff --git a/tests/ui/string_to_string_in_map.rs b/tests/ui/string_to_string_in_map.rs deleted file mode 100644 index 5bf1d7ba5a2..00000000000 --- a/tests/ui/string_to_string_in_map.rs +++ /dev/null @@ -1,20 +0,0 @@ -#![deny(clippy::string_to_string)] -#![allow(clippy::unnecessary_literal_unwrap, clippy::useless_vec, clippy::iter_cloned_collect)] - -fn main() { - let variable1 = String::new(); - let v = &variable1; - let variable2 = Some(v); - let _ = variable2.map(String::to_string); - //~^ string_to_string - let _ = variable2.map(|x| x.to_string()); - //~^ string_to_string - #[rustfmt::skip] - let _ = variable2.map(|x| { x.to_string() }); - //~^ string_to_string - - let _ = vec![String::new()].iter().map(String::to_string).collect::<Vec<_>>(); - //~^ string_to_string - let _ = vec![String::new()].iter().map(|x| x.to_string()).collect::<Vec<_>>(); - //~^ string_to_string -} diff --git a/tests/ui/string_to_string_in_map.stderr b/tests/ui/string_to_string_in_map.stderr deleted file mode 100644 index 35aeed656ee..00000000000 --- a/tests/ui/string_to_string_in_map.stderr +++ /dev/null @@ -1,38 +0,0 @@ -error: `to_string()` called on a `String` - --> tests/ui/string_to_string_in_map.rs:8:23 - | -LL | let _ = variable2.map(String::to_string); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `cloned()` - | -note: the lint level is defined here - --> tests/ui/string_to_string_in_map.rs:1:9 - | -LL | #![deny(clippy::string_to_string)] - | ^^^^^^^^^^^^^^^^^^^^^^^^ - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string_in_map.rs:10:23 - | -LL | let _ = variable2.map(|x| x.to_string()); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `cloned()` - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string_in_map.rs:13:23 - | -LL | let _ = variable2.map(|x| { x.to_string() }); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `cloned()` - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string_in_map.rs:16:40 - | -LL | let _ = vec![String::new()].iter().map(String::to_string).collect::<Vec<_>>(); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `cloned()` - -error: `to_string()` called on a `String` - --> tests/ui/string_to_string_in_map.rs:18:40 - | -LL | let _ = vec![String::new()].iter().map(|x| x.to_string()).collect::<Vec<_>>(); - | ^^^^^^^^^^^^^^^^^^^^^^ help: try: `cloned()` - -error: aborting due to 5 previous errors - |