3 ms·

It's also worth pointing out that buffers passed to strcpy, memcpy, etc. must not overlap. Otherwise it results in undefined behavior.

• lttlrck 14y ago
  That's stdlib though, not the language.
  • caf 14y ago
    The standard library is part of the language - all hosted implementations must provide it. This allows, for example, compilers to replace a `memcpy()` call that has a constant size argument with direct loads/stores.
• apaprocki 14y ago
  It has come up in the past that this distinction is a historical artifact rather than a necessity. Linus tried to get Ulrich to change this in glibc, but it was not changed. http://www.sourceware.org/bugzilla/show_bug.cgi?id=12518 http://www.sourceware.org/bugzilla/show_bug.cgi?id=12518
• angersock 14y ago
  memmove() has proper memory moving semantics, and can deal with overlapping buffers.