Home/ Questions/Q 887433
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T13:13:45+00:00

When array is created using ‘new’ and deleted using ‘delete’ operator, delete knows the

  • 0

When array is created using ‘new’ and deleted using ‘delete’ operator, delete knows the size of array. As mentioned in other SO threads, this size information is stored in metadata.

My question: what exactly is stored in metadata and how much space is needed for that? Is it only the size which is stored in metadata?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    According to C++ Standard 5.3.4/12: 

    new T[5] results in a call of operator new[](sizeof(T)*5+x),

    <…>where x is a non-negative unspecified values representing array allocation overhead. <…> The amount
    of overhead may vary from one invocation of new to another.

    • 0