RPC: Avoid assert by keeping a flag to identify trimmed dynafed blocks

Author: psgreco

src/chain.h

@@ -200,6 +200,7 @@ class CBlockIndex
     std::optional<CScriptWitness> m_signblock_witness{};
 
     bool m_trimmed{false};
+    bool m_trimmed_dynafed_block{false};
 
     friend class CBlockTreeDB;
 
@@ -210,6 +211,7 @@ class CBlockIndex
     void trim() {
         assert_untrimmed();
         m_trimmed = true;
+        m_trimmed_dynafed_block = !m_dynafed_params.value().IsNull();
         proof = std::nullopt;
         m_dynafed_params = std::nullopt;
         m_signblock_witness = std::nullopt;
@@ -228,6 +230,13 @@ class CBlockIndex
         return proof.value();
     }
 
+    const bool dynafed_block() const {
+        if (m_trimmed) {
+            return m_trimmed_dynafed_block;
+        }
+        return !m_dynafed_params.value().IsNull();
+    }
+
     const DynaFedParams& dynafed_params() const {
         assert_untrimmed();
         return m_dynafed_params.value();

src/rpc/blockchain.cpp

@@ -248,7 +248,7 @@ UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex
         result.pushKV("difficulty", GetDifficulty(blockindex));
         result.pushKV("chainwork", blockindex->nChainWork.GetHex());
     } else {
-        if (blockindex->dynafed_params().IsNull()) {
+        if (!blockindex->dynafed_block()) {
             if (blockindex->trimmed()) {
                 result.pushKV("signblock_witness_asm", "<trimmed>");
                 result.pushKV("signblock_witness_hex", "<trimmed>");

src/txdb.cpp

@@ -389,6 +389,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts(const Consensus::Params& consensusParams,
                     }
                 } else {
                     pindexNew->m_trimmed = true;
+                    pindexNew->m_trimmed_dynafed_block = !diskindex.m_dynafed_params.value().IsNull();
                 }
 
                 pcursor->Next();