extern int rust_parse (struct parser_state *);
/* The la_error implementation for Rust. */
-extern void rustyyerror (char *);
+extern void rustyyerror (const char *);
/* Return true if TYPE is a tuple type; otherwise false. */
-extern int rust_tuple_type_p (struct type *type);
+extern bool rust_tuple_type_p (struct type *type);
/* Return true if TYPE is a tuple struct type; otherwise false. */
-extern int rust_tuple_struct_type_p (struct type *type);
+extern bool rust_tuple_struct_type_p (struct type *type);
/* Given a block, find the name of the block's crate. Returns an empty
stringif no crate name can be found. */