Add final attribute to many classes

In some cases this can offer better optimization, via devirtualization.
And it lets the user know the class is not intended for derivation.

Some discussion in GH #402

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/tls/tls_seq_numbers.h b/src/lib/tls/tls_seq_numbers.h
index 09962075e..aa0cfe1f4 100644
--- a/src/lib/tls/tls_seq_numbers.h
+++ b/src/lib/tls/tls_seq_numbers.h
@@ -32,7 +32,7 @@ class Connection_Sequence_Numbers
       virtual void read_accept(u64bit seq) = 0;
    };
 
-class Stream_Sequence_Numbers : public Connection_Sequence_Numbers
+class Stream_Sequence_Numbers final : public Connection_Sequence_Numbers
    {
    public:
       void new_read_cipher_state() override { m_read_seq_no = 0; m_read_epoch += 1; }
@@ -53,7 +53,7 @@ class Stream_Sequence_Numbers : public Connection_Sequence_Numbers
       u16bit m_write_epoch = 0;
    };
 
-class Datagram_Sequence_Numbers : public Connection_Sequence_Numbers
+class Datagram_Sequence_Numbers final : public Connection_Sequence_Numbers
    {
    public:
       Datagram_Sequence_Numbers() { m_write_seqs[0] = 0; }