[boost] Potentially breaking change in VC8

From: Carl Daniel (cpdaniel_at_[hidden])
Date: 2005-07-22 20:04:37

Current builds of VC8 (newer than the June CTP) are implementing the change 
suggested by

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1757.html

I don't know how or if this affects any Boost code, but it's something to 
watch out for.  I would expect the next CTP of VC8 may well include this 
change.

-cd

PS: The change makes code like this ill-formed:

   template <unsigned n> struct bit_count
   {
      enum { value = n ? bit_count<n >> 1>::value+1 : 0 };
   };

   template <> struct bit_count<0>
   {
      enum { value = 0 };
   };