Function need_value

Source/Misc/lua/src/lua.c:3791–3797

** 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 */
}


static int patchtestreg (FuncState *fs, int node, int reg) {