6 ms·

> The first 4 are implementation defined rather than undefined. Third and fourth are only defined in some implementations.

• ryao 3y ago
  That is fair for 4, although would explain why it is the case for 3?
  • turminal 3y ago
    If char is signed and ' ' * 13 is bigger than CHAR_MAX, you get UB by signed overflow.
    • deleted 3y ago
      [deleted]