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why are C++ symbol names mangled?

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The Question is:

 
I tried to call C subroutine from FORTRAN.
I used CXX to compile the subroutine named "TEST".
After link, I fund the name changed in the map file called "TEST__XV".
Then, in FORTRAN, I used call "TEST__XV" instead of call
"TEST", it worked. Where is "__XV" coming from? Is there
any predefined macro in OpenVMS C++ to
deal with FORTRAN mix-languages programming that resolves this
naming problem?

The Answer is :

 
  C++ includes a feature sometimes known as symbol name "mangling".
  For information on this, please see the C++ documentation set.
 


  

     
     
answer written or last revised on ( 9-JUL-1998 )

     
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