Here's where the freelist operations are defined: https://github.com/openssl/openssl/blob/21e0c1d23afff48601eb93135defddae51f7e2e3/ssl/s3_both.c#L599 https://gi

Here's where the freelist operations are defined: https://github.com/openssl/openssl/blob/21e0c1d23afff48601eb93135defddae51f7e2e3/ssl/s3_both.c#L599 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.