Auto merge of #144044 - fmease:rollup-kg413pt, r=fmease

Rollup of 15 pull requests

Successful merges:

 - rust-lang/rust#142304 (tests: Add `RUST_BACKTRACE` and `-Cpanic` revisions to `panic-main.rs` test)
 - rust-lang/rust#143388 (Various refactors to the LTO handling code)
 - rust-lang/rust#143409 (Enable xgot feature for mips64 musl targets)
 - rust-lang/rust#143592 (UWP: link ntdll functions using raw-dylib)
 - rust-lang/rust#143595 (add `const_make_global`; err for `const_allocate` ptrs if didn't call)
 - rust-lang/rust#143678 (Added error for invalid char cast)
 - rust-lang/rust#143820 (Fixed a core crate compilation failure when enabling the `optimize_for_size` feature on some targets)
 - rust-lang/rust#143829 (Trim `BorrowedCursor` API)
 - rust-lang/rust#143851 (ci cleanup: rustdoc-gui-test now installs browser-ui-test)
 - rust-lang/rust#143856 (Linting public reexport of private dependencies)
 - rust-lang/rust#143895 (Dont collect assoc ty item bounds from trait where clause for host effect predicates)
 - rust-lang/rust#143922 (Improve path segment joining)
 - rust-lang/rust#143964 (Fix handling of SCRIPT_ARG in docker images)
 - rust-lang/rust#144002 (Update poison.rs)
 - rust-lang/rust#144016 (trait_sel: `MetaSized` always holds temporarily)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

clippy_lints/src/methods/from_iter_instead_of_collect.rs

@@ -4,6 +4,7 @@ use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet_with_applicability;
 use clippy_utils::ty::implements_trait;
 use clippy_utils::{is_path_diagnostic_item, sugg};
+use rustc_ast::join_path_idents;
 use rustc_errors::Applicability;
 use rustc_hir::def::Res;
 use rustc_hir::{self as hir, Expr, ExprKind, GenericArg, QPath, TyKind};
@@ -47,7 +48,7 @@ fn build_full_type(cx: &LateContext<'_>, hir_ty: &hir::Ty<'_>, app: &mut Applica
         && let QPath::Resolved(None, ty_path) = &ty_qpath
         && let Res::Def(_, ty_did) = ty_path.res
     {
-        let mut ty_str = itertools::join(ty_path.segments.iter().map(|s| s.ident), "::");
+        let mut ty_str = join_path_idents(ty_path.segments.iter().map(|seg| seg.ident));
         let mut first = true;
         let mut append = |arg: &str| {
             write!(&mut ty_str, "{}{arg}", [", ", "<"][usize::from(first)]).unwrap();

clippy_utils/src/lib.rs

@@ -89,6 +89,7 @@ use std::sync::{Mutex, MutexGuard, OnceLock};
 
 use itertools::Itertools;
 use rustc_abi::Integer;
+use rustc_ast::join_path_syms;
 use rustc_ast::ast::{self, LitKind, RangeLimits};
 use rustc_attr_data_structures::{AttributeKind, find_attr};
 use rustc_data_structures::fx::FxHashMap;
@@ -3245,8 +3246,8 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
                 // a::b::c  ::d::sym refers to
                 // e::f::sym:: ::
                 // result should be super::super::super::super::e::f
-                if let DefPathData::TypeNs(s) = l {
-                    path.push(s.to_string());
+                if let DefPathData::TypeNs(sym) = l {
+                    path.push(sym);
                 }
                 if let DefPathData::TypeNs(_) = r {
                     go_up_by += 1;
@@ -3256,7 +3257,7 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
             // a::b::sym:: ::    refers to
             // c::d::e  ::f::sym
             // when looking at `f`
-            Left(DefPathData::TypeNs(sym)) => path.push(sym.to_string()),
+            Left(DefPathData::TypeNs(sym)) => path.push(sym),
             // consider:
             // a::b::c  ::d::sym refers to
             // e::f::sym:: ::
@@ -3268,17 +3269,17 @@ fn maybe_get_relative_path(from: &DefPath, to: &DefPath, max_super: usize) -> St
 
     if go_up_by > max_super {
         // `super` chain would be too long, just use the absolute path instead
-        once(String::from("crate"))
-            .chain(to.data.iter().filter_map(|el| {
+        join_path_syms(
+            once(kw::Crate).chain(to.data.iter().filter_map(|el| {
                 if let DefPathData::TypeNs(sym) = el.data {
-                    Some(sym.to_string())
+                    Some(sym)
                 } else {
                     None
                 }
             }))
-            .join("::")
+        )
     } else {
-        repeat_n(String::from("super"), go_up_by).chain(path).join("::")
+        join_path_syms(repeat_n(kw::Super, go_up_by).chain(path))
     }
 }