struct c_strlen_data;
extern bool get_range_strlen (tree, c_strlen_data *, unsigned eltsize);
extern void gimplify_and_update_call_from_tree (gimple_stmt_iterator *, tree);
+extern bool update_gimple_call (gimple_stmt_iterator *, tree, int, ...);
extern bool fold_stmt (gimple_stmt_iterator *);
extern bool fold_stmt (gimple_stmt_iterator *, tree (*) (tree));
extern bool fold_stmt_inplace (gimple_stmt_iterator *);