Little conveniences

[Danilo Almeida]

Greg,

Wrt the out pointer argument casting issues, you can do something like this:

  #define k5alloc(Size, PointerToPointer) \
      ( !((*(PointerToPointer)) = calloc(Size, 1)) ? ENOMEM : 0 )

For C++, you need a cast in there, so a template does the trick:

  template<typename T> int k5alloc(size_t Size, T* PointerToPointer)
  {
      return ( !((*(PointerToPointer)) = (T) calloc(Size, 1)) ? ENOMEM : 0
);
  }

Then you can always just do:

  ret = k5alloc(sizeof(foo), &foo);
  if (ret) ...

- Danilo