//ww:run-exit 100
// Migrated from 700_e2e row 35.
package main;
fn main() i32 = {
  let s: []u8;
  s.ptr = nil; s.len = 0; s.cap = 0;
  append(s, 10u8, 20u8, 30u8, 40u8);
  let total: i32 = 0;
  for (let b .. s) { total += b: i32; };
  return total;
};