rb_objspace_markable_object_p  722 ext/objspace/objspace.c     if (rb_objspace_markable_object_p(obj)) {
rb_objspace_markable_object_p  784 ext/objspace/objspace.c     if (rb_objspace_markable_object_p(obj)) {
rb_objspace_markable_object_p  833 ext/objspace/objspace.c     if (rb_objspace_markable_object_p(obj) &&
rb_objspace_markable_object_p   99 gc.h           int rb_objspace_markable_object_p(VALUE obj);