6fc1453c   
   From: dave@boostpro.com   
      
   on Wed Oct 05 2011, piotrN  wrote:   
      
   > On Oct 3, 8:56 pm, brang...@cix.co.uk (Dave Harris) wrote:   
   >> musip...@bawi.org (Seungbeom Kim) wrote (abridged):   
   >   
   >>   
   >> because it's undefined behaviour to instantiate a std::vector on a   
   >> partial type. Where-as with my home-grown vector, I can. The standard   
   >> reserves for itself lots of freedoms and those translate into   
   >> restrictions for users.   
   >>   
   >   
   > Dave,   
   >   
   > It is simple not true. You can instantiate std::vector with incomplete   
   > type.   
      
   You may be "able" to, but not without invoking undefined behavior.   
   Undefined behavior may turn out to be benign, as I guess it was for you,   
   or it may not.   
      
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