c++ - Is deleting a null pointer in C++ considered undefined behaviour?

Question

Consider the following piece of code:

int main() {
  int *i = nullptr;
  delete i;
}

Questions:

1. Is deleting a null pointer considered undefined behaviour?
2. Did something changed in C++11 or C++14?

Answer 1

在 C++ 中删除 NULL 指针是否被认为是未定义的行为？

不，这是完全合法的操作。

从N3242，[expr.delete]

delete的操作数的值可能是空指针值