Beyond this,

  &ptr

and

  &arr

are different types! The signature for

  bogus(arr, &arr)

is something like

  void bogus(const char* arg1, const char (*arg2)[12])

While they do point to the same data, it's pretty rare to actually want to declare a

  const char (*)[N]

as a function argument - template magic code excepted, you don't gain much over a

  char *

and it's not the same as a

  char**

The two lines do different things, so of course they will generate different code. What do you know, the one that actually lets you do useful things is a few bytes longer.