title: How to print the current stack usage in c with printf?
body: <p>Basically the title says it all.
  I need to print, how much of the stack is currently used by the running program and I need to print it with printf().</p>
  
  <p>EDIT: I have to overflow the stack. In order to do that, I wrote a recursive function, which indefinitely calls itself. I have to print the stack usage repeatedly, to show, how the stack becomes smaller.</p>
  
  <p>EDIT2: The platform is gcc on linux.</p>