Merge #4648

4648: Support raw_ref_op's raw reference operator r=matklad a=robojumper

Fixes #4642.

This syntax (and its semantics) are implemented in rustc behind the `raw_ref_op` feature.

It is not entirely clear whether this is the syntax that will become stable, but [it seems like](https://github.com/rust-lang/rust/pull/72279) rust-analyzer must still support this unstable syntax to support future stable rust.

Also fixes a random inference failure involving a direct coercion from `&[T, _]` to `*const [T]`.

Co-authored-by: robojumper <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/crates/ra_hir_def/src/expr.rs b/crates/ra_hir_def/src/expr.rs
index a0cdad529..f25c6f958 100644
--- a/crates/ra_hir_def/src/expr.rs
+++ b/crates/ra_hir_def/src/expr.rs
@@ -19,7 +19,7 @@ use ra_syntax::ast::RangeOp;
 use crate::{
     builtin_type::{BuiltinFloat, BuiltinInt},
     path::{GenericArgs, Path},
-    type_ref::{Mutability, TypeRef},
+    type_ref::{Mutability, Rawness, TypeRef},
 };
 
 pub type ExprId = Idx<Expr>;
@@ -110,6 +110,7 @@ pub enum Expr {
     },
     Ref {
         expr: ExprId,
+        rawness: Rawness,
         mutability: Mutability,
     },
     Box {