>Instead of doing what was intended, moving the string up one place, the
code has different behaviour.

Yes, it will fill the buffer with "H" which is what I would expect to happen
- not immediately obvious, but sensible. (any 370 assembler guys will
recognise MVC as doing this).

If you want to copy from one mem location to another even if they overlap
*and* preserve the contents, then you should use memmove and pay the
overhead of the temporary buffer it probably allocates.


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