From 642cdb47299e9ff9ca13c58afb929fca42fc2a7e Mon Sep 17 00:00:00 2001
From: Jouzo <15011228+Jouzo@users.noreply.github.com>
Date: Thu, 10 Oct 2024 05:45:32 +0100
Subject: [PATCH] Check for tip (#3088)

---
 src/init.cpp | 34 ++++++++++++++++++----------------
 1 file changed, 18 insertions(+), 16 deletions(-)

diff --git a/src/init.cpp b/src/init.cpp
index 2d1b608c88..951c259948 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -2049,22 +2049,24 @@ bool AppInitMain(InitInterfaces& interfaces)
                     }
                 }
 
-                // Prune based on checkpoints
-                auto &checkpoints = chainparams.Checkpoints().mapCheckpoints;
-                auto it = checkpoints.lower_bound(::ChainActive().Tip()->nHeight);
-                if (it != checkpoints.begin()) {
-                    auto &[height, _] = *(--it);
-                    std::vector<unsigned char> compactBegin;
-                    std::vector<unsigned char> compactEnd;
-                    PruneCheckpoint(*pcustomcsview, height, compactBegin, compactEnd);
-                    if (!compactBegin.empty() && !compactEnd.empty()) {
-                        pcustomcsview->Flush();
-                        pcustomcsDB->Flush();
-                        auto time = GetTimeMillis();
-                        pcustomcsDB->Compact(compactBegin, compactEnd);
-                        compactBegin.clear();
-                        compactEnd.clear();
-                        LogPrint(BCLog::BENCH, "    - DB compacting takes: %dms\n", GetTimeMillis() - time);
+                if (::ChainActive().Tip() != nullptr) {
+                    // Prune based on checkpoints
+                    auto &checkpoints = chainparams.Checkpoints().mapCheckpoints;
+                    auto it = checkpoints.lower_bound(::ChainActive().Tip()->nHeight);
+                    if (it != checkpoints.begin()) {
+                        auto &[height, _] = *(--it);
+                        std::vector<unsigned char> compactBegin;
+                        std::vector<unsigned char> compactEnd;
+                        PruneCheckpoint(*pcustomcsview, height, compactBegin, compactEnd);
+                        if (!compactBegin.empty() && !compactEnd.empty()) {
+                            pcustomcsview->Flush();
+                            pcustomcsDB->Flush();
+                            auto time = GetTimeMillis();
+                            pcustomcsDB->Compact(compactBegin, compactEnd);
+                            compactBegin.clear();
+                            compactEnd.clear();
+                            LogPrint(BCLog::BENCH, "    - DB compacting takes: %dms\n", GetTimeMillis() - time);
+                        }
                     }
                 }
             } catch (const std::exception& e) {