title: porting linux 32 bit app to 64 bit?
body: <p>i'm about to port very large scale application to 64 Bits, 
  i've noticed in that in the web there some articles which shows 
  many pitfalls of this porting , 
  i wondered if there is any tool which can assist in porting to 64 bit , meaning
  finding the places in code that needs to be changed.... maybe the gcc with warnnings enabled... is it good enough ? is there anything better ?</p>
  
  <p>EDIT: Guys i am searching for a tool if any that might be a complete to the compiler, 
        i know GCC can asist , but i doubt it will find all un portable problems that<br>
        will be discovered in run-time....maybe static code analysis tool that emphasize 
        porting to 64 bits ?</p>
  
  <p>thanks</p>