Function need_value

3rd/lua-5.4.3/src/lcode.c:880–886

** check whether list has any jump that do not produce a value ** or produce an inverted value */

** or produce an inverted value
*/
static int need_value (FuncState *fs, int list) {
  for (; list != NO_JUMP; list = getjump(fs, list)) {
    Instruction i = *getjumpcontrol(fs, list);
    if (GET_OPCODE(i) != OP_TESTSET) return 1;
  }
  return 0;  /* not found */
}


/*