extern void record_buffer (Lisp_Object);
extern void fix_overlays_before (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void mmap_set_vars (bool);
extern void record_buffer (Lisp_Object);
extern void fix_overlays_before (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void mmap_set_vars (bool);