luaK_checkstack   210 lib/lua/lcode.c   luaK_checkstack(fs, n);
luaK_checkstack    50 lib/lua/lcode.h LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
luaK_checkstack  1107 lib/lua/lparser.c   luaK_checkstack(fs, 3);  /* extra space to call generator */