It was previously pushing the byte on top of the string's null
terminator. I added a test to make sure it doesn't break in the future.
let new_len = s.len() + 1;
s.reserve_at_least(new_len);
do s.as_mut_buf |buf, len| {
- *ptr::mut_offset(buf, len as int) = b;
+ *ptr::mut_offset(buf, (len-1) as int) = b;
}
set_len(&mut *s, new_len);
}
assert!(!" _ ".is_whitespace());
}
+ #[test]
+ fn test_push_byte() {
+ let mut s = ~"ABC";
+ unsafe{raw::push_byte(&mut s, 'D' as u8)};
+ assert_eq!(s, ~"ABCD");
+ }
+
#[test]
fn test_shift_byte() {
let mut s = ~"ABC";