Auto merge of #149704 - matthiaskrgr:rollup-u4zhw99, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - #146826 (Implement `Allocator` for `&mut A` where `A: Allocator + ?Sized`)
 - #148487 (add Option::into_flat_iter)
 - #148814 (stabilize `array_windows`)
 - #149401 (Fix `name()` functions for local defs in rustc_public)
 - #149683 (Fix armv8r-none-eabihf tier)

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

Author: bors

compiler/rustc_ast/src/lib.rs

@@ -5,8 +5,8 @@
 //! This API is completely unstable and subject to change.
 
 // tidy-alphabetical-start
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![doc(test(attr(deny(warnings), allow(internal_features))))]
-#![feature(array_windows)]
 #![feature(associated_type_defaults)]
 #![feature(box_patterns)]
 #![feature(if_let_guard)]

compiler/rustc_data_structures/src/lib.rs

@@ -10,9 +10,9 @@
 #![allow(internal_features)]
 #![allow(rustc::default_hash_types)]
 #![allow(rustc::potential_query_instability)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![deny(unsafe_op_in_unsafe_fn)]
 #![feature(allocator_api)]
-#![feature(array_windows)]
 #![feature(ascii_char)]
 #![feature(ascii_char_variants)]
 #![feature(assert_matches)]

compiler/rustc_errors/src/lib.rs

@@ -7,7 +7,7 @@
 #![allow(rustc::diagnostic_outside_of_impl)]
 #![allow(rustc::direct_use_of_rustc_type_ir)]
 #![allow(rustc::untranslatable_diagnostic)]
-#![feature(array_windows)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(assert_matches)]
 #![feature(associated_type_defaults)]
 #![feature(box_patterns)]

compiler/rustc_expand/src/lib.rs

@@ -1,7 +1,7 @@
 // tidy-alphabetical-start
 #![allow(internal_features)]
 #![allow(rustc::diagnostic_outside_of_impl)]
-#![feature(array_windows)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(associated_type_defaults)]
 #![feature(if_let_guard)]
 #![feature(macro_metavar_expr)]

compiler/rustc_lint/src/lib.rs

@@ -21,7 +21,7 @@
 
 // tidy-alphabetical-start
 #![allow(internal_features)]
-#![feature(array_windows)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(assert_matches)]
 #![feature(box_patterns)]
 #![feature(if_let_guard)]

compiler/rustc_middle/src/lib.rs

@@ -29,8 +29,8 @@
 #![allow(rustc::diagnostic_outside_of_impl)]
 #![allow(rustc::direct_use_of_rustc_type_ir)]
 #![allow(rustc::untranslatable_diagnostic)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(allocator_api)]
-#![feature(array_windows)]
 #![feature(assert_matches)]
 #![feature(associated_type_defaults)]
 #![feature(box_as_ptr)]

compiler/rustc_middle/src/ty/print/pretty.rs

@@ -105,7 +105,7 @@ define_helper!(
     ///
     /// Overrides `with_crate_prefix`.
 
-    // This function is not currently used in-tree, but it's used by a downstream rustc-driver in
+    // This function is used by `rustc_public` and downstream rustc-driver in
     // Ferrocene. Please check with them before removing it.
     fn with_resolve_crate_name(CrateNamePrefixGuard, SHOULD_PREFIX_WITH_CRATE_NAME);
     /// Adds the `crate::` prefix to paths where appropriate.

compiler/rustc_mir_transform/src/lib.rs

@@ -1,5 +1,5 @@
 // tidy-alphabetical-start
-#![feature(array_windows)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(assert_matches)]
 #![feature(box_patterns)]
 #![feature(const_type_name)]

compiler/rustc_monomorphize/src/lib.rs

@@ -1,5 +1,5 @@
 // tidy-alphabetical-start
-#![feature(array_windows)]
+#![cfg_attr(bootstrap, feature(array_windows))]
 #![feature(file_buffered)]
 #![feature(if_let_guard)]
 #![feature(impl_trait_in_assoc_type)]

compiler/rustc_public/src/lib.rs

@@ -178,7 +178,7 @@ impl CrateItem {
     pub fn emit_mir<W: io::Write>(&self, w: &mut W) -> io::Result<()> {
         self.body()
             .ok_or_else(|| io::Error::other(format!("No body found for `{}`", self.name())))?
-            .dump(w, &self.name())
+            .dump(w, &self.trimmed_name())
     }
 }