// all we care is that this executes, really

add_type_conversion(type("int"), type("bool"), fun(int i) { return i != 0; });

if (0) {
  assert_true(false);
}

if (!0) {
  assert_true(true);
} else {
  assert_true(false);
}

while (0) {
  assert_true(false);
}

for (; 0; ) {
  assert_true(false);
}