8ea6848f   
   From: no.spam.here@its.invalid   
      
   On 11/1/2011 12:28 PM, Frank Bergemann wrote:   
   > Hi,   
   > i want to create some generic function call tracker, which logs enter/   
   > exit of functions plus values of input&  output variables for entering   
   > respectively exiting functions.   
   > But i hit a problem to simplify the user interface (see main.cpp).   
   > Here's the code:   
   [redacted]   
      
   > struct _ArgCommon   
   > {   
   [redacted]   
   > };   
   >   
   > template   
   > struct _Arg : public _ArgCommon   
   > {   
   [redacted]   
   > };   
   >   
   [redacted]   
   > // variadic template type list transformation   
   > template   
   > struct _ArgTuple   
   > {   
   > 	typedef typename std::tr1::tuple&...>  Type;   
   > };   
      
   [redacted]   
   >   
   > struct _EnterExitMsgShared {   
   > 	static int _level;   
   > };   
   >   
   > template   
   > class _EnterExitMsgImpl   
   > {   
   [redacted]   
   > };   
   >   
   > template   
   > class EnterExitMsg : public _EnterExitMsgImpl<  typename   
   > _ArgTuple::Type>   
   > {   
   [redacted]   
   > };   
   > #endif /*ENTEREXITMSG_H_*/   
   [remainder redacted]   
      
   Doesn't matter.  Per ISO/IEC 14882:2003 2.10/2, 17.4.3.1/1,   
   and 17.4.3.1.2/1, your code will exhibit undefined behavior.   
      
   Any identifier with a leading underscore followed by an   
   upper case letter is reserved to the implementation (17.4.3.1.2/1).   
      
   Use of reserved identifiers is undefined (17.4.3.1/1).   
      
      
      
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