//ww:run-exit 10
// Migrated from 700_e2e row 6.
package main;
fn main() i32 = {
  let buf: [4]u8;
  buf[0] = 1: u8;
  buf[1] = 2: u8;
  buf[2] = 3: u8;
  buf[3] = 4: u8;
  let sum: i32 = 0;
  let i: i32 = 0;
  for (i < 4) { sum += buf[i]: i32; i += 1; };
  return sum;
};