What is the issue with redefining the struct type and how can it be resolved?

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The issue with redefining the struct type is that it can lead to unexpected behavior in the code. If a struct type is redefined with different field types or different numbers of fields, code that relies on the original struct type may break or produce incorrect results.

To resolve this issue, it is recommended to use a different name for the new struct type. If the new struct type is meant to be an extension of the original struct type, it can be defined as a new struct type with a field that contains the original struct type. This way, code that relies on the original struct type can still use it, while code that needs the new struct type can access it through the field. Another solution is to use a union to encapsulate different versions of the struct type.