CONST unsigned char *fixed_buffer_input_stream_ptr (Lstream *stream);
unsigned char *fixed_buffer_output_stream_ptr (Lstream *stream);
Lisp_Object make_resizing_buffer_output_stream (void);
CONST unsigned char *fixed_buffer_input_stream_ptr (Lstream *stream);
unsigned char *fixed_buffer_output_stream_ptr (Lstream *stream);
Lisp_Object make_resizing_buffer_output_stream (void);