extern tree convert PARAMS ((tree, tree));
extern unsigned int expr_align PARAMS ((tree));
+extern tree expr_first PARAMS ((tree));
extern tree expr_last PARAMS ((tree));
+extern int expr_length PARAMS ((tree));
extern tree size_in_bytes PARAMS ((tree));
extern HOST_WIDE_INT int_size_in_bytes PARAMS ((tree));
extern tree bit_position PARAMS ((tree));