rust/src/test/run-fail/str-overrun.rs

// xfail-stage0
// -*- rust -*-

// error-pattern:bounds check

fn main() {
  let str s = "hello";
  let int x = 0;
  check (s.(x) == (0x68 as u8));

  // NB: at the moment a string always has a trailing NULL,
  // so the largest index value on the string above is 5, not
  // 4. Possibly change this.

  // Bounds-check failure.
  check (s.(x + 6) == (0x0 as u8));
}