Merge #19846: build: enable unused member function diagnostic

819d03b932134ee91df3b0fe98a481a331ce57bf refactor: took out unused member functions (Zero)
ed69213c2b2a99023bdee5168614cb8b71990f5f build: enable unused member function diagnostic (Zero)

Pull request description:

  This PR enables the `-Wunused-member-function` compiler diagnostic, as discussed in #19702.

  > **Notice**: The `unused-member-function` diagnostic is only available on clang. Therefore, clang should be used to test this PR.

  - [x] Include the `-Wunused-member-function`diagnostic in `./configure.ac`. (ed69213c2b2a99023bdee5168614cb8b71990f5f)
  - [x] Resolve the reported warnings. (819d03b932134ee91df3b0fe98a481a331ce57bf)

  Currently, enabling this flag no longer reports the following warnings:

  > **Note**: output from `make 2>&1 | grep "warning: unused member function" | sort | uniq -c`

  ```
  1 index/blockfilterindex.cpp:54:5: warning: unused member function 'DBHeightKey' [-Wunused-member-function]
  2 script/bitcoinconsensus.cpp:50:9: warning: unused member function 'GetType' [-Wunused-member-function]
  1 test/util_tests.cpp:1975:14: warning: unused member function 'operator=' [-Wunused-member-function]
  ```

  All tests have passed locally (from `make check` & `src/test/test_bitcoin`).

  This PR closes #19702.

ACKs for top commit:
  practicalswift:
    ACK 819d03b932134ee91df3b0fe98a481a331ce57bf - patch still looks correct :)
  MarcoFalke:
    ACK 819d03b932134ee91df3b0fe98a481a331ce57bf
  pox:
    Tested ACK 819d03b932134ee91df3b0fe98a481a331ce57bf with clang after `make clean`. No unused member function warnings.
  theStack:
    tested ACK 819d03b932134ee91df3b0fe98a481a331ce57bf

Tree-SHA512: 5fdfbbb02b3dc618a90a874a5caa5e01e596fc1d14a209e75a6981f01b253f9bca0cfac8fdd758dd7151986609fb76571c3745124a29cfd4f8cbb8d82a07272e

1 files changed, 2 insertions, 5 deletions

diff --git a/src/script/bitcoinconsensus.cpp b/src/script/bitcoinconsensus.cpp
index 15e204062f..76609f01a7 100644
--- a/src/script/bitcoinconsensus.cpp
+++ b/src/script/bitcoinconsensus.cpp
@@ -16,8 +16,7 @@ namespace {
 class TxInputStream
 {
 public:
-    TxInputStream(int nTypeIn, int nVersionIn, const unsigned char *txTo, size_t txToLen) :
-    m_type(nTypeIn),
+    TxInputStream(int nVersionIn, const unsigned char *txTo, size_t txToLen) :
     m_version(nVersionIn),
     m_data(txTo),
     m_remaining(txToLen)
@@ -47,9 +46,7 @@ public:
     }
 
     int GetVersion() const { return m_version; }
-    int GetType() const { return m_type; }
 private:
-    const int m_type;
     const int m_version;
     const unsigned char* m_data;
     size_t m_remaining;
@@ -84,7 +81,7 @@ static int verify_script(const unsigned char *scriptPubKey, unsigned int scriptP
         return set_error(err, bitcoinconsensus_ERR_INVALID_FLAGS);
     }
     try {
-        TxInputStream stream(SER_NETWORK, PROTOCOL_VERSION, txTo, txToLen);
+        TxInputStream stream(PROTOCOL_VERSION, txTo, txToLen);
         CTransaction tx(deserialize, stream);
         if (nIn >= tx.vin.size())
             return set_error(err, bitcoinconsensus_ERR_TX_INDEX);