Disallow attributes on alias declarations

src/check_decl.cpp

@@ -391,11 +391,21 @@ void check_const_decl(CheckerContext *ctx, Entity *e, Ast *type_expr, Ast *init,
 			case Entity_Procedure:
 			case Entity_LibraryName:
 			case Entity_ImportName:
+				{
 					override_entity_in_scope(e, entity);
+
+					DeclInfo *decl = decl_info_of_entity(e);
+					if (decl != nullptr) {
+						if (decl->attributes.count > 0) {
+							error(decl->attributes[0], "Constant alias declarations cannot have attributes");
+						}
+					}
+
 					return;
 				}
 			}
 		}
+	}
 
 	check_init_constant(ctx, e, &operand);