extern void fold_undefer_overflow_warnings (bool, tree, int);
extern void fold_undefer_and_ignore_overflow_warnings (void);
extern bool fold_deferring_overflow_warnings_p (void);
+extern tree maybe_fold_offset_to_component_ref (tree, tree, tree,
+ tree, bool);
extern tree force_fit_type_double (tree, unsigned HOST_WIDE_INT, HOST_WIDE_INT,
int, bool);