raw pointers are not references

Author: RalfJung

compiler/rustc_const_eval/messages.ftl

@@ -337,7 +337,7 @@ const_eval_too_many_caller_args =
 
 const_eval_transient_mut_borrow = mutable references are not allowed in {const_eval_const_context}s
 
-const_eval_transient_mut_borrow_raw = raw mutable references are not allowed in {const_eval_const_context}s
+const_eval_transient_mut_raw = raw mutable pointers are not allowed in {const_eval_const_context}s
 
 const_eval_try_block_from_output_non_const =
     `try` block cannot convert `{$ty}` to the result in {const_eval_const_context}s
@@ -360,8 +360,8 @@ const_eval_unallowed_mutable_refs =
 
         If you really want global mutable state, try using static mut or a global UnsafeCell.
 
-const_eval_unallowed_mutable_refs_raw =
-    raw mutable references are not allowed in the final value of {const_eval_const_context}s
+const_eval_unallowed_mutable_raw =
+    raw mutable pointers are not allowed in the final value of {const_eval_const_context}s
     .teach_note =
         References in statics and constants may only refer to immutable values.
 

compiler/rustc_const_eval/src/errors.rs

@@ -114,8 +114,8 @@ pub(crate) struct TransientMutBorrowErr {
 }
 
 #[derive(Diagnostic)]
-#[diag(const_eval_transient_mut_borrow_raw, code = "E0658")]
-pub(crate) struct TransientMutBorrowErrRaw {
+#[diag(const_eval_transient_mut_raw, code = "E0658")]
+pub(crate) struct TransientMutRawErr {
     #[primary_span]
     pub span: Span,
     pub kind: ConstContext,
@@ -156,8 +156,8 @@ pub(crate) struct UnallowedMutableRefs {
 }
 
 #[derive(Diagnostic)]
-#[diag(const_eval_unallowed_mutable_refs_raw, code = "E0764")]
-pub(crate) struct UnallowedMutableRefsRaw {
+#[diag(const_eval_unallowed_mutable_raw, code = "E0764")]
+pub(crate) struct UnallowedMutableRaw {
     #[primary_span]
     pub span: Span,
     pub kind: ConstContext,

compiler/rustc_const_eval/src/transform/check_consts/ops.rs

@@ -508,7 +508,7 @@ impl<'tcx> NonConstOp<'tcx> for MutBorrow {
         span: Span,
     ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed> {
         match self.0 {
-            hir::BorrowKind::Raw => ccx.tcx.sess.create_err(errors::UnallowedMutableRefsRaw {
+            hir::BorrowKind::Raw => ccx.tcx.sess.create_err(errors::UnallowedMutableRaw {
                 span,
                 kind: ccx.const_kind(),
                 teach: ccx.tcx.sess.teach(&error_code!(E0764)).then_some(()),
@@ -537,10 +537,10 @@ impl<'tcx> NonConstOp<'tcx> for TransientMutBorrow {
     ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed> {
         let kind = ccx.const_kind();
         match self.0 {
-            hir::BorrowKind::Raw => ccx.tcx.sess.create_feature_err(
-                errors::TransientMutBorrowErrRaw { span, kind },
-                sym::const_mut_refs,
-            ),
+            hir::BorrowKind::Raw => ccx
+                .tcx
+                .sess
+                .create_feature_err(errors::TransientMutRawErr { span, kind }, sym::const_mut_refs),
             hir::BorrowKind::Ref => ccx.tcx.sess.create_feature_err(
                 errors::TransientMutBorrowErr { span, kind },
                 sym::const_mut_refs,

tests/ui/consts/const-address-of-mut.rs

@@ -1,14 +1,14 @@
 #![feature(raw_ref_op)]
 
-const A: () = { let mut x = 2; &raw mut x; };           //~ mutable reference
+const A: () = { let mut x = 2; &raw mut x; };           //~ mutable pointer
 
-static B: () = { let mut x = 2; &raw mut x; };          //~ mutable reference
+static B: () = { let mut x = 2; &raw mut x; };          //~ mutable pointer
 
-static mut C: () = { let mut x = 2; &raw mut x; };      //~ mutable reference
+static mut C: () = { let mut x = 2; &raw mut x; };      //~ mutable pointer
 
 const fn foo() {
     let mut x = 0;
-    let y = &raw mut x;                                 //~ mutable reference
+    let y = &raw mut x;                                 //~ mutable pointer
 }
 
 fn main() {}

tests/ui/consts/const-address-of-mut.stderr

@@ -1,4 +1,4 @@
-error[E0658]: raw mutable references are not allowed in constants
+error[E0658]: raw mutable pointers are not allowed in constants
   --> $DIR/const-address-of-mut.rs:3:32
    |
 LL | const A: () = { let mut x = 2; &raw mut x; };
@@ -7,7 +7,7 @@ LL | const A: () = { let mut x = 2; &raw mut x; };
    = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
    = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
 
-error[E0658]: raw mutable references are not allowed in statics
+error[E0658]: raw mutable pointers are not allowed in statics
   --> $DIR/const-address-of-mut.rs:5:33
    |
 LL | static B: () = { let mut x = 2; &raw mut x; };
@@ -16,7 +16,7 @@ LL | static B: () = { let mut x = 2; &raw mut x; };
    = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
    = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
 
-error[E0658]: raw mutable references are not allowed in statics
+error[E0658]: raw mutable pointers are not allowed in statics
   --> $DIR/const-address-of-mut.rs:7:37
    |
 LL | static mut C: () = { let mut x = 2; &raw mut x; };
@@ -25,7 +25,7 @@ LL | static mut C: () = { let mut x = 2; &raw mut x; };
    = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
    = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
 
-error[E0658]: raw mutable references are not allowed in constant functions
+error[E0658]: raw mutable pointers are not allowed in constant functions
   --> $DIR/const-address-of-mut.rs:11:13
    |
 LL |     let y = &raw mut x;

tests/ui/consts/min_const_fn/address_of.rs

@@ -2,15 +2,15 @@
 
 const fn mutable_address_of_in_const() {
     let mut a = 0;
-    let b = &raw mut a;         //~ ERROR mutable reference
+    let b = &raw mut a;         //~ ERROR mutable pointer
 }
 
 struct X;
 
 impl X {
     const fn inherent_mutable_address_of_in_const() {
         let mut a = 0;
-        let b = &raw mut a;     //~ ERROR mutable reference
+        let b = &raw mut a;     //~ ERROR mutable pointer
     }
 }
 

tests/ui/consts/min_const_fn/address_of.stderr

@@ -1,4 +1,4 @@
-error[E0658]: raw mutable references are not allowed in constant functions
+error[E0658]: raw mutable pointers are not allowed in constant functions
   --> $DIR/address_of.rs:5:13
    |
 LL |     let b = &raw mut a;
@@ -7,7 +7,7 @@ LL |     let b = &raw mut a;
    = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
    = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
 
-error[E0658]: raw mutable references are not allowed in constant functions
+error[E0658]: raw mutable pointers are not allowed in constant functions
   --> $DIR/address_of.rs:13:17
    |
 LL |         let b = &raw mut a;