add name resolution processing for discriminant values

gcc/rust/ChangeLog:

	* resolve/rust-ast-resolve-item.cc (ResolveItem::visit): add name resolution processing for discriminant values
	* resolve/rust-ast-resolve-stmt.h: add name resolution processing for discriminant values

Signed-off-by: Ryutaro Okada <[email protected]>

Author: sakupan102

gcc/rust/resolve/rust-ast-resolve-item.cc

@@ -356,6 +356,7 @@ ResolveItem::visit (AST::EnumItemDiscriminant &item)
   auto cpath = canonical_prefix.append (decl);
 
   mappings.insert_canonical_path (item.get_node_id (), cpath);
+  ResolveExpr::go (item.get_expr (), path, cpath);
 }
 
 void

gcc/rust/resolve/rust-ast-resolve-stmt.h

@@ -234,6 +234,7 @@ class ResolveStmt : public ResolverBase
 	rust_error_at (r, "defined multiple times");
       });
 
+    ResolveExpr::go (item.get_expr (), path, cpath);
     // Done, no fields.
   }