ref: 24e2f336e79216f6c8d91a74eb4cdf88a5749434
dir: /tests/execute/0135-unary.c/
int
main()
{
int x;
x = 3;
x = !x; // 0
x = !x; // 1
x = ~x; // -1
x = -x; // 2
if(x != 2)
return 1;
return 0;
}