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Tip of the Day
Language: C++
Expertise: Beginner
May 2, 1997

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I get a runtime error when I use the array delete operator

Question:
This is legal (safe) and works with the compiler environment I am using:
 CMyObject *ptr = NULL;
  delete ptr;
However, I get a run-time error (assert) when I use the array delete operator:
long *array = NULL;
  delete [] array;
Is the environment right or is it legal C++ to use array delete on a NULL pointer?

Answer:
It is perfectly legal and safe to use delete or delete [] on null pointers. When called with a zero argument the operation has no effect.

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