Converting 32-bit Application Into 64-bit Application in C

Question

I am presently working on converting a 32bits application into a 64bits application in C. This application is currently working on x86 architecture (Windows, osx, Unix, Linu

Answer 1

There are lots of good answers already.

Consider using Gimpel Lint. It can point out exactly the types of constructs that are problematic. If your experience is like mine, it will also show you lots of bugs in the system unrelated to the 32/64 bit port.