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Comment by delroth | Hacker News Reader

That's not really "little known". Almost every single piece of code that does string manipulation in C uses that fact:

  const char* s = ...;
  while (*s++) { ... }

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I think you have proven my point. I'm talking about this:

  void something(const char* const s);

Maybe I'm extrapolating here, but it surprised me.

That is indeed what the post you're replying to meant. Note that the pointed-to value is a constant string, yet the pointer itself is being modified. That's a fairly common idiom in C string-handling code, only possible because it's a const char , not a const char const.

constant pointers are arguably little-known, though pointers to constants are well known.

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