gray2black 78 lib/lua/lgc.c gray2black(o); /* udata are never gray */ gray2black 87 lib/lua/lgc.c gray2black(o); /* open upvalues are never black */ gray2black 280 lib/lua/lgc.c gray2black(o); gray2black 701 lib/lua/lgc.c gray2black(o); /* closed upvalues need barrier */