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Typical errors of porting C++ code on the 64-bit platform
- Introduction
- Off-warnings
- Use of the functions with a variable number of arguments
- Magic numbers
- Bit shifting operations
- Storing of pointer addresses
- Memsize types in unions
- Change of an array type
- Virtual functions with arguments of memsize type
- Serialization and data exchange
- Pointer address arithmetic
- Arrays indexing
- Mixed use of simple integer types and memsize types
- Implicit type conversions while using functions
- Overload functions
- Data alignment
- The use of outdated functions and predefined constants
- Explicit type conversions
- Error diagnosis
- Unit test
- Code review
- Built-in means of compilers
- Static analyzers
- Conclusion
- Resources
Built-in means of compilers
Compilers allow to solve some problems of searching defect code. They often have built-in different mechanisms for diagnosing errors observed. For example, in Microsoft Visual C++ 2005 the following keys may be useful: /Wp64, /Wall, and in SunStudio C++ key –xport64.
Unfortunately, the possibilities they provide are often not enough and you should not rely only on them. But in any case it is highly recommended to enable the corresponding options of a compiler for diagnosing errors in the 64-bit code.
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