Add `override` for common virtual function overrides

Mostly done with:

```
find -name "*_impl.h" | xargs sed -i -r '/(void forecast|int work|int general_work|bool check_topology)\(/{:back /\)/b nxt;N;b back;:nxt s/\)$|\)(;)/) override\1/g}'
```

Then I removed an incorrect `work` that this found.

14 files changed, 24 insertions, 24 deletions

diff --git a/gr-trellis/lib/constellation_metrics_cf_impl.h b/gr-trellis/lib/constellation_metrics_cf_impl.h
index d07a15b61..140e9fcbd 100644
--- a/gr-trellis/lib/constellation_metrics_cf_impl.h
+++ b/gr-trellis/lib/constellation_metrics_cf_impl.h
@@ -30,12 +30,12 @@ public:
                                   digital::trellis_metric_type_t TYPE);
     ~constellation_metrics_cf_impl();
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/encoder_impl.h b/gr-trellis/lib/encoder_impl.h
index 69dc8f503..a80c1dc46 100644
--- a/gr-trellis/lib/encoder_impl.h
+++ b/gr-trellis/lib/encoder_impl.h
@@ -42,7 +42,7 @@ public:
     void set_K(int K);
     int work(int noutput_items,
              gr_vector_const_void_star& input_items,
-             gr_vector_void_star& output_items);
+             gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/metrics_impl.h b/gr-trellis/lib/metrics_impl.h
index 91e9421f2..a7bcdd48d 100644
--- a/gr-trellis/lib/metrics_impl.h
+++ b/gr-trellis/lib/metrics_impl.h
@@ -43,12 +43,12 @@ public:
     void set_TYPE(digital::trellis_metric_type_t type);
     void set_TABLE(const std::vector<T>& table);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/pccc_decoder_blk_impl.h b/gr-trellis/lib/pccc_decoder_blk_impl.h
index 3d2abeaec..ae72d9011 100644
--- a/gr-trellis/lib/pccc_decoder_blk_impl.h
+++ b/gr-trellis/lib/pccc_decoder_blk_impl.h
@@ -57,12 +57,12 @@ public:
     int repetitions() const { return d_repetitions; }
     siso_type_t SISO_TYPE() const { return d_SISO_TYPE; }
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/pccc_decoder_combined_blk_impl.h b/gr-trellis/lib/pccc_decoder_combined_blk_impl.h
index 95259e746..2b3597b4e 100644
--- a/gr-trellis/lib/pccc_decoder_combined_blk_impl.h
+++ b/gr-trellis/lib/pccc_decoder_combined_blk_impl.h
@@ -69,12 +69,12 @@ public:
     float scaling() const { return d_scaling; }
     void set_scaling(float scaling);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/pccc_encoder_impl.h b/gr-trellis/lib/pccc_encoder_impl.h
index 986bcb400..19b1cddcd 100644
--- a/gr-trellis/lib/pccc_encoder_impl.h
+++ b/gr-trellis/lib/pccc_encoder_impl.h
@@ -46,7 +46,7 @@ public:
 
     int work(int noutput_items,
              gr_vector_const_void_star& input_items,
-             gr_vector_void_star& output_items);
+             gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/permutation_impl.h b/gr-trellis/lib/permutation_impl.h
index 8c160c2c1..44e349a04 100644
--- a/gr-trellis/lib/permutation_impl.h
+++ b/gr-trellis/lib/permutation_impl.h
@@ -43,7 +43,7 @@ public:
 
     int work(int noutput_items,
              gr_vector_const_void_star& input_items,
-             gr_vector_void_star& output_items);
+             gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/sccc_decoder_blk_impl.h b/gr-trellis/lib/sccc_decoder_blk_impl.h
index 499c8a3bc..9ca91ba5d 100644
--- a/gr-trellis/lib/sccc_decoder_blk_impl.h
+++ b/gr-trellis/lib/sccc_decoder_blk_impl.h
@@ -57,12 +57,12 @@ public:
     int repetitions() const { return d_repetitions; }
     siso_type_t SISO_TYPE() const { return d_SISO_TYPE; }
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/sccc_decoder_combined_blk_impl.h b/gr-trellis/lib/sccc_decoder_combined_blk_impl.h
index 4bdcdbadb..644a6bebe 100644
--- a/gr-trellis/lib/sccc_decoder_combined_blk_impl.h
+++ b/gr-trellis/lib/sccc_decoder_combined_blk_impl.h
@@ -69,12 +69,12 @@ public:
     float scaling() const { return d_scaling; }
     void set_scaling(float scaling);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/sccc_encoder_impl.h b/gr-trellis/lib/sccc_encoder_impl.h
index 3220859f0..38fa22615 100644
--- a/gr-trellis/lib/sccc_encoder_impl.h
+++ b/gr-trellis/lib/sccc_encoder_impl.h
@@ -46,7 +46,7 @@ public:
 
     int work(int noutput_items,
              gr_vector_const_void_star& input_items,
-             gr_vector_void_star& output_items);
+             gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/siso_combined_f_impl.h b/gr-trellis/lib/siso_combined_f_impl.h
index 237c6d09e..c3ade2626 100644
--- a/gr-trellis/lib/siso_combined_f_impl.h
+++ b/gr-trellis/lib/siso_combined_f_impl.h
@@ -68,12 +68,12 @@ public:
     void set_TABLE(const std::vector<float>& table);
     void set_TYPE(digital::trellis_metric_type_t type);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/siso_f_impl.h b/gr-trellis/lib/siso_f_impl.h
index 14b73d941..a47a45c37 100644
--- a/gr-trellis/lib/siso_f_impl.h
+++ b/gr-trellis/lib/siso_f_impl.h
@@ -60,12 +60,12 @@ public:
     void set_POSTO(bool POSTO);
     void set_SISO_TYPE(trellis::siso_type_t type);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/viterbi_combined_impl.h b/gr-trellis/lib/viterbi_combined_impl.h
index 397f53c29..3dc09ea76 100644
--- a/gr-trellis/lib/viterbi_combined_impl.h
+++ b/gr-trellis/lib/viterbi_combined_impl.h
@@ -56,12 +56,12 @@ public:
     void set_TABLE(const std::vector<IN_T>& table);
     void set_TYPE(digital::trellis_metric_type_t type);
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
 
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */
diff --git a/gr-trellis/lib/viterbi_impl.h b/gr-trellis/lib/viterbi_impl.h
index 87d866a5b..07b7e1843 100644
--- a/gr-trellis/lib/viterbi_impl.h
+++ b/gr-trellis/lib/viterbi_impl.h
@@ -42,11 +42,11 @@ public:
     void set_SK(int SK);
     // std::vector<int> trace () const { return d_trace; }
 
-    void forecast(int noutput_items, gr_vector_int& ninput_items_required);
+    void forecast(int noutput_items, gr_vector_int& ninput_items_required) override;
     int general_work(int noutput_items,
                      gr_vector_int& ninput_items,
                      gr_vector_const_void_star& input_items,
-                     gr_vector_void_star& output_items);
+                     gr_vector_void_star& output_items) override;
 };
 
 } /* namespace trellis */