[Clippy] Swap redundant_clone to use diagnostic items instead of paths

Author: GnomedDev

clippy_lints/src/redundant_clone.rs

@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::{span_lint_hir, span_lint_hir_and_then};
 use clippy_utils::mir::{visit_local_usage, LocalUsage, PossibleBorrowerMap};
 use clippy_utils::source::SpanRangeExt;
 use clippy_utils::ty::{has_drop, is_copy, is_type_diagnostic_item, is_type_lang_item, walk_ptrs_ty_depth};
-use clippy_utils::{fn_has_unsatisfiable_preds, match_def_path, paths};
+use clippy_utils::fn_has_unsatisfiable_preds;
 use rustc_errors::Applicability;
 use rustc_hir::intravisit::FnKind;
 use rustc_hir::{def_id, Body, FnDecl, LangItem};
@@ -102,8 +102,8 @@ impl<'tcx> LateLintPass<'tcx> for RedundantClone {
                     && is_type_lang_item(cx, arg_ty, LangItem::String));
 
             let from_deref = !from_borrow
-                && (match_def_path(cx, fn_def_id, &paths::PATH_TO_PATH_BUF)
-                    || match_def_path(cx, fn_def_id, &paths::OS_STR_TO_OS_STRING));
+                && (cx.tcx.is_diagnostic_item(sym::path_to_pathbuf, fn_def_id)
+                    || cx.tcx.is_diagnostic_item(sym::os_str_to_os_string, fn_def_id));
 
             if !from_borrow && !from_deref {
                 continue;

clippy_utils/src/paths.rs

@@ -37,12 +37,10 @@ pub const LATE_LINT_PASS: [&str; 3] = ["rustc_lint", "passes", "LateLintPass"];
 pub const LINT: [&str; 2] = ["rustc_lint_defs", "Lint"];
 pub const MSRV: [&str; 3] = ["clippy_config", "msrvs", "Msrv"];
 pub const OPEN_OPTIONS_NEW: [&str; 4] = ["std", "fs", "OpenOptions", "new"];
-pub const OS_STR_TO_OS_STRING: [&str; 5] = ["std", "ffi", "os_str", "OsStr", "to_os_string"];
 pub const PARKING_LOT_MUTEX_GUARD: [&str; 3] = ["lock_api", "mutex", "MutexGuard"];
 pub const PARKING_LOT_RWLOCK_READ_GUARD: [&str; 3] = ["lock_api", "rwlock", "RwLockReadGuard"];
 pub const PARKING_LOT_RWLOCK_WRITE_GUARD: [&str; 3] = ["lock_api", "rwlock", "RwLockWriteGuard"];
 pub const PATH_MAIN_SEPARATOR: [&str; 3] = ["std", "path", "MAIN_SEPARATOR"];
-pub const PATH_TO_PATH_BUF: [&str; 4] = ["std", "path", "Path", "to_path_buf"];
 #[cfg_attr(not(unix), allow(clippy::invalid_paths))]
 pub const PERMISSIONS_FROM_MODE: [&str; 6] = ["std", "os", "unix", "fs", "PermissionsExt", "from_mode"];
 pub const PUSH_STR: [&str; 4] = ["alloc", "string", "String", "push_str"];