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Tip of the Day
Language: C++
Expertise: Advanced
Feb 4, 1999

Memory Layout of a Multiply Inherited Object is Unspecified

When multiple inheritance is used, the memory layout of such an object is implementation-dependent. The compiler can rearrange the order of the inherited subobjects to improve memory alignment. In addition, a virtual base can be moved to a different memory location. Therefore, when using multiple inheritance, you should not assume anything about the underlying memory layout of an object.
Danny Kalev
 
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