From 482126f3bcb30ec05f2831887061cca9d0b31369 Mon Sep 17 00:00:00 2001
From: Jim Posen <jim.posen@gmail.com>
Date: Fri, 28 Feb 2020 17:05:44 -0800
Subject: [PATCH] const all the things.

Github-Pull: #16442
Rebased-From: 3007ee61fd922d79401e1bf9832df4ca6e7ab707
---
 src/init.cpp           |  6 +++---
 src/net_processing.cpp | 13 +++++++------
 2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/src/init.cpp b/src/init.cpp
index b2522ccffca55..fb1c3b9d3d8a3 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -968,9 +968,9 @@ bool AppInitParameterInteraction()
 
     // Signal NODE_COMPACT_FILTERS if peercfilters and required index are both enabled.
     if (gArgs.GetBoolArg("-peercfilters", DEFAULT_PEERCFILTERS)) {
-        bool index_enabled = std::find(g_enabled_filter_types.begin(),
-                                       g_enabled_filter_types.end(),
-                                       BlockFilterType::BASIC) != g_enabled_filter_types.end();
+        const bool index_enabled = std::find(g_enabled_filter_types.begin(),
+                                             g_enabled_filter_types.end(),
+                                             BlockFilterType::BASIC) != g_enabled_filter_types.end();
         if (!index_enabled) {
             return InitError(_("Cannot set -peercfilters without -blockfilterindex.").translated);
         }
diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 022fbed2aaa58..e71872b7023ec 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -1230,7 +1230,7 @@ static bool UpdateCFHeadersCache(const BlockFilterIndex& filter_index)
     for (uint32_t height = (new_size + 1) * CFCHECKPT_INTERVAL;
          height <= static_cast<uint32_t>(active_chain.Height());
          height += CFCHECKPT_INTERVAL) {
-        const CBlockIndex* block_index = active_chain[height];
+        const CBlockIndex* const block_index = active_chain[height];
         uint256 filter_header;
 
         if (!filter_index.LookupFilterHeader(block_index, filter_header)) {
@@ -1923,7 +1923,7 @@ static bool PrepareBlockFilterRequest(CNode* pfrom, const CChainParams& chain_pa
                                       const CBlockIndex*& stop_index,
                                       BlockFilterIndex*& filter_index)
 {
-    bool supported_filter_type =
+    const bool supported_filter_type =
         (filter_type == BlockFilterType::BASIC &&
          (pfrom->GetLocalServices() & NODE_COMPACT_FILTERS));
     if (!supported_filter_type) {
@@ -1981,7 +1981,7 @@ static bool ProcessGetCFilters(CNode* pfrom, CDataStream& vRecv, const CChainPar
 
     vRecv >> filter_type_ser >> start_height >> stop_hash;
 
-    BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
+    const BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
 
     const CBlockIndex* stop_index;
     BlockFilterIndex* filter_index;
@@ -2016,7 +2016,7 @@ static bool ProcessGetCFHeaders(CNode* pfrom, CDataStream& vRecv, const CChainPa
 
     vRecv >> filter_type_ser >> start_height >> stop_hash;
 
-    BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
+    const BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
 
     const CBlockIndex* stop_index;
     BlockFilterIndex* filter_index;
@@ -2028,7 +2028,8 @@ static bool ProcessGetCFHeaders(CNode* pfrom, CDataStream& vRecv, const CChainPa
 
     uint256 prev_header;
     if (start_height > 0) {
-        const CBlockIndex* prev_block = stop_index->GetAncestor(start_height - 1);
+        const CBlockIndex* const prev_block =
+            stop_index->GetAncestor(static_cast<int>(start_height - 1));
         if (!filter_index->LookupFilterHeader(prev_block, prev_header)) {
             return error("Failed to find block filter header in index: filter_type=%s, block_hash=%s",
                          BlockFilterTypeName(filter_type), prev_block->GetBlockHash().ToString());
@@ -2060,7 +2061,7 @@ static bool ProcessGetCFCheckPt(CNode* pfrom, CDataStream& vRecv, const CChainPa
 
     vRecv >> filter_type_ser >> stop_hash;
 
-    BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
+    const BlockFilterType filter_type = static_cast<BlockFilterType>(filter_type_ser);
 
     const CBlockIndex* stop_index;
     BlockFilterIndex* filter_index;