GC_deepest_obj    387 gc/backgraph.c ptr_t GC_deepest_obj;
GC_deepest_obj    436 gc/backgraph.c 	GC_deepest_obj = p_deepest_obj;
GC_deepest_obj    457 gc/backgraph.c     GC_print_heap_obj(GC_deepest_obj);
GC_deepest_obj    464 gc/backgraph.c   GC_deepest_obj = 0;