title: Overload resolution with extern "C" linkage
body: <p>In a mixed C/C++ project, we need to make a call from C to a C++ function. The function to be called is overloaded as three separate functions, but we can ignore that from the C-side, we just pick the one most suitable and stick to that one.</p>
  
  <p>There's two ways to do this: (1) write a small C++ wrapper with a extern "C" function that forwards the call to the chosen overloaded function, or (2) the hackish way to just declare the one function we want to call from C as extern "C".</p>
  
  <p>The question is, is there any disadvantages (apart from nightmares and bad karma) to go for the second variant? In other words, given three overloaded function, where one is declared as exern "C", should we expect trouble with the C++ side, or is this well defined according to the standard?</p>