3 Generic 64-bit Portability Problems

There are a number of things to watch for when porting existing 32-bit code to 64-bit. If you are used to writing code for 32-bit machines, misplaced assumptions may be invalid for 64-bit code.

• 3.1 Listen to Your Compiler
• 3.2 Bad Assumptions about Data Types
• 3.3 Poorly Sized Malloc Calls
• 3.4 Careful Using Variable Argument Lists
• 3.5 Using inttypes.h
• 3.6 Changed Page Sizes