[cmbaus]

Here's where the freelist operations are defined: https://github.com/openssl/openssl/blob/21e0c1d23afff48601eb...

But where are they called from?

Update: To answer my own question the freelist is used in

    ssl3_setup_read_buffer()
    ssl3_release_read_buffer()
    ssl3_setup_writer_buffer()
    ssl3_release_write_buffer()

This is not the same as universally replacing the allocator.