GPR_FLAG_NONE     780 gc.c           #define will_be_incremental_marking(objspace) ((objspace)->rgengc.need_major_gc != GPR_FLAG_NONE)
GPR_FLAG_NONE    3667 gc.c               if (objspace->rgengc.need_major_gc == GPR_FLAG_NONE && heap_increment(objspace, heap)) {
GPR_FLAG_NONE    6310 gc.c           	objspace->rgengc.need_major_gc = GPR_FLAG_NONE;
GPR_FLAG_NONE    8822 gc.c               if (reason == GPR_FLAG_NONE) {