itree_empty_p    6862 src/alloc.c      if (!itree_empty_p (buffer->overlays))
itree_empty_p    1280 src/buffer.h     return !itree_empty_p (current_buffer->overlays);
itree_empty_p    2864 src/pdumper.c    if (!itree_empty_p (buffer->overlays))
itree_empty_p     738 test/manual/noverlay/itree-tests.c   ck_assert (itree_empty_p (&tree));