Why is Checking `this == nullptr` Considered Non-Logical in C ?

Is it Logical to Check for this == nullptr?

In the context of C , it is generally considered nonsensical to check if this is null. This is because any method call on a null pointer already constitutes undefined behavior, rendering any code based on such checks non-standard.

While it is conceptually true that this == nullptr implies the object is deleted, this is not an accurate representation of the situation. A call on this with a null pointer value indicates that either the method was invoked directly on a null pointer or on a reference derived from one. This occurrence, however, is not inherently related to the delete operator or the existence of any objects of that type.

Some implementations, such as VC and MFC, may permit the use of this == 0. In these instances, libraries tailored specifically for such implementations may employ it as a troubleshooting expedient. However, this practice is discouraged as a more effective debugging approach involves utilizing asserts for condition checks.

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