stabilize raw_ref_op

Author: RalfJung

compiler/rustc_ast_passes/src/feature_gate.rs

@@ -524,7 +524,6 @@ pub fn check_crate(krate: &ast::Crate, sess: &Session, features: &Features) {
         }
     }
     gate_all!(gen_blocks, "gen blocks are experimental");
-    gate_all!(raw_ref_op, "raw address of syntax is experimental");
     gate_all!(const_trait_impl, "const trait impls are experimental");
     gate_all!(
         half_open_range_patterns_in_slices,

compiler/rustc_codegen_cranelift/example/mini_core_hello_world.rs

@@ -6,8 +6,7 @@
     extern_types,
     naked_functions,
     thread_local,
-    repr_simd,
-    raw_ref_op
+    repr_simd
 )]
 #![no_core]
 #![allow(dead_code, non_camel_case_types, internal_features)]

compiler/rustc_codegen_gcc/example/mini_core_hello_world.rs

@@ -2,7 +2,7 @@
 
 #![feature(
     no_core, unboxed_closures, start, lang_items, never_type, linkage,
-    extern_types, thread_local, raw_ref_op
+    extern_types, thread_local
 )]
 #![no_core]
 #![allow(dead_code, internal_features, non_camel_case_types)]

compiler/rustc_error_codes/src/error_codes/E0745.md

@@ -3,7 +3,6 @@ The address of temporary value was taken.
 Erroneous code example:
 
 ```compile_fail,E0745
-# #![feature(raw_ref_op)]
 fn temp_address() {
     let ptr = &raw const 2; // error!
 }
@@ -15,7 +14,6 @@ In this example, `2` is destroyed right after the assignment, which means that
 To avoid this error, first bind the temporary to a named local variable:
 
 ```
-# #![feature(raw_ref_op)]
 fn temp_address() {
     let val = 2;
     let ptr = &raw const val; // ok!

compiler/rustc_feature/src/accepted.rs

@@ -310,6 +310,8 @@ declare_features! (
     (accepted, raw_dylib, "1.71.0", Some(58713)),
     /// Allows keywords to be escaped for use as identifiers.
     (accepted, raw_identifiers, "1.30.0", Some(48589)),
+    /// Allows `&raw const $place_expr` and `&raw mut $place_expr` expressions.
+    (accepted, raw_ref_op, "CURRENT_RUSTC_VERSION", Some(64490)),
     /// Allows relaxing the coherence rules such that
     /// `impl<T> ForeignTrait<LocalType> for ForeignType<T>` is permitted.
     (accepted, re_rebalance_coherence, "1.41.0", Some(55437)),

compiler/rustc_feature/src/unstable.rs

@@ -571,8 +571,6 @@ declare_features! (
     (unstable, precise_capturing, "1.79.0", Some(123432)),
     /// Allows macro attributes on expressions, statements and non-inline modules.
     (unstable, proc_macro_hygiene, "1.30.0", Some(54727)),
-    /// Allows `&raw const $place_expr` and `&raw mut $place_expr` expressions.
-    (unstable, raw_ref_op, "1.41.0", Some(64490)),
     /// Makes `&` and `&mut` patterns eat only one layer of references in Rust 2024.
     (incomplete, ref_pat_eat_one_layer_2024, "1.79.0", Some(123076)),
     /// Makes `&` and `&mut` patterns eat only one layer of references in Rust 2024—structural variant

compiler/rustc_parse/src/parser/expr.rs

@@ -846,7 +846,7 @@ impl<'a> Parser<'a> {
         self.expect_and()?;
         let has_lifetime = self.token.is_lifetime() && self.look_ahead(1, |t| t != &token::Colon);
         let lifetime = has_lifetime.then(|| self.expect_lifetime()); // For recovery, see below.
-        let (borrow_kind, mutbl) = self.parse_borrow_modifiers(lo);
+        let (borrow_kind, mutbl) = self.parse_borrow_modifiers();
         let attrs = self.parse_outer_attributes()?;
         let expr = if self.token.is_range_separator() {
             self.parse_expr_prefix_range(attrs)
@@ -866,13 +866,12 @@ impl<'a> Parser<'a> {
     }
 
     /// Parse `mut?` or `raw [ const | mut ]`.
-    fn parse_borrow_modifiers(&mut self, lo: Span) -> (ast::BorrowKind, ast::Mutability) {
+    fn parse_borrow_modifiers(&mut self) -> (ast::BorrowKind, ast::Mutability) {
         if self.check_keyword(kw::Raw) && self.look_ahead(1, Token::is_mutability) {
             // `raw [ const | mut ]`.
             let found_raw = self.eat_keyword(kw::Raw);
             assert!(found_raw);
             let mutability = self.parse_const_or_mut().unwrap();
-            self.psess.gated_spans.gate(sym::raw_ref_op, lo.to(self.prev_token.span));
             (ast::BorrowKind::Raw, mutability)
         } else {
             // `mut?`

src/tools/miri/tests/fail/function_calls/return_pointer_aliasing.rs

@@ -1,7 +1,6 @@
 //@revisions: stack tree none
 //@[tree]compile-flags: -Zmiri-tree-borrows
 //@[none]compile-flags: -Zmiri-disable-stacked-borrows
-#![feature(raw_ref_op)]
 #![feature(core_intrinsics)]
 #![feature(custom_mir)]
 

src/tools/miri/tests/fail/function_calls/return_pointer_aliasing2.rs

@@ -1,7 +1,6 @@
 // This does need an aliasing model.
 //@revisions: stack tree
 //@[tree]compile-flags: -Zmiri-tree-borrows
-#![feature(raw_ref_op)]
 #![feature(core_intrinsics)]
 #![feature(custom_mir)]
 

src/tools/miri/tests/fail/function_calls/return_pointer_on_unwind.rs

@@ -1,6 +1,5 @@
 // Doesn't need an aliasing model.
 //@compile-flags: -Zmiri-disable-stacked-borrows
-#![feature(raw_ref_op)]
 #![feature(core_intrinsics)]
 #![feature(custom_mir)]