ref: 0abc10c55a5366e6fdad4c775e5f18b39c14eec6
dir: /tests/cc/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;
}