// Single-expression body.
var c = 0;
while (c < 3) print c = c + 1;
// expect: 1
// expect: 2
// expect: 3

// Block body.
var a = 0;
while (a < 3) {
  print a;
  a = a + 1;
}
// expect: 0
// expect: 1
// expect: 2

// Statement bodies.
while (false) if (true) 1; else 2;
while (false) while (true) 1;
while (false) for (;;) 1;