I have one pointer which is NULL, but if NULL is its value, I think that is still all right to free the memory allocated for it.
Is this true?
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Letsintegreat
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No operation is performed. – danglingpointer May 01 '18 at 08:47
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It is legal and can make sense. If you initialise data properly you can `free(.)` pointers that may be `NULL`. If you recycle objects you may need to re-initialise them. `free(p); p=NULL;` is a common practice. – Persixty May 01 '18 at 08:49