The OpenSSL Library no longer registers an atexit function

Previous posts about features removed from OpenSSL 4.0:

1. ENGINE code
2. deprecated functions for creating or modifying custom METHODS

Summary

The OPENSSL_cleanup() function is no longer registered to be called
upon the termination of the process. This means the OpenSSL Library
does not automatically free resources so the operating system reclaims
them when an application exits.

For most users, this will have no impact since the memory is freed one
way or the other.