mirror of
https://github.com/github/codeql.git
synced 2025-12-17 09:13:20 +01:00
57 lines
2.3 KiB
Java
57 lines
2.3 KiB
Java
//Test of ConstantExpAppearsNonConstant.ql
|
|
|
|
import java.util.*;
|
|
|
|
class Test{
|
|
public void tester(){
|
|
Random rnd = new Random();
|
|
|
|
int lit = 42; //OK
|
|
int paren = (9); //OK
|
|
int plusone = +1; //OK
|
|
|
|
//Multiplication by 0
|
|
int mul_not_constant = 42 * 6; //OK
|
|
int mul_constant_left = 0 * 60 * 60 * 24; //OK
|
|
int mul_constant_right = 60 * 60 * 24 * 0; //OK
|
|
int mul_is_not_constant = rnd.nextInt() * 1; //OK
|
|
int mul_is_constant_int_left = (0+0) * rnd.nextInt(); //NOT OK
|
|
int mul_is_constant_int_right = rnd.nextInt() * (1-1); //NOT OK
|
|
long mul_is_constant_hex = rnd.nextLong() * (0x0F & 0xF0); //NOT OK
|
|
long mul_is_constant_binary = rnd.nextLong() * (0b010101 & 0b101010); //NOT OK
|
|
int mul_explicit_zero = rnd.nextInt() * 0; //OK (deliberate zero multiplication)
|
|
//Remainder by 1
|
|
int rem_not_constant = 42 % 6; //OK
|
|
int rem_constant = 60 % 1; //OK
|
|
int rem_is_not_constant = rnd.nextInt() % 2; //OK
|
|
int rem_is_constant_int = rnd.nextInt() % 1; //NOT OK
|
|
double rem_is_constant_float = rnd.nextDouble() % 1; //OK (remainder by 1 on floats is not constant)
|
|
long rem_is_constant_hex = rnd.nextLong() % 0x1; //NOT OK
|
|
long rem_is_constant_binary = rnd.nextLong() % 01; //NOT OK
|
|
|
|
//Bitwise 'and' by 0
|
|
int band_not_constant = 42 & 6; //OK
|
|
int band_appears_constant_left = 0 & 60; //OK
|
|
int band_appears_constant_right = 24 & 0; //OK
|
|
int band_is_not_constant = rnd.nextInt() & 5; //OK
|
|
int band_is_constant_left = 0 & rnd.nextInt(); //NOT OK
|
|
int band_is_constant_right = rnd.nextInt() & 0; //NOT OK
|
|
|
|
//Logical 'and' by false
|
|
boolean and_not_constant = true && true; //OK
|
|
boolean and_appears_constant_left = false && true; //OK
|
|
boolean and_appears_constant_right = true && false; //OK
|
|
boolean and_is_not_constant = (rnd.nextInt() > 0) && true; //OK
|
|
boolean and_is_constant_left = false && (rnd.nextInt() > 0); // don't flag (deliberately disabled)
|
|
boolean and_is_constant_right = (rnd.nextInt() > 0) && false; // don't flag (deliberately disabled)
|
|
|
|
//Logical 'or' by true
|
|
boolean or_not_constant = false || false; //OK
|
|
boolean or_appears_constant_left = true || false; //OK
|
|
boolean or_appears_constant_right = false || true; //OK
|
|
boolean or_is_not_constant = (rnd.nextInt() > 0) || false; //OK
|
|
boolean or_is_constant_left = true || (rnd.nextInt() > 0); //NOT OK
|
|
boolean or_is_constant_right = (rnd.nextInt() > 0) || true; //NOT OK
|
|
}
|
|
}
|