validation: report if pruning prevents completion of verification

Now the verifychain RPC returns false if the checks didn't
finish because the blocks requested to be queried have been pruned.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/validation.cpp b/src/validation.cpp
index 4da52b7d8b..de1a4ce91f 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -4081,6 +4081,7 @@ VerifyDBResult CVerifyDB::VerifyDB(
     int nGoodTransactions = 0;
     BlockValidationState state;
     int reportDone = 0;
+    bool skipped_no_block_data{false};
     bool skipped_l3_checks{false};
     LogPrintf("Verification progress: 0%%\n");
 
@@ -4100,7 +4101,8 @@ VerifyDBResult CVerifyDB::VerifyDB(
         if ((chainstate.m_blockman.IsPruneMode() || is_snapshot_cs) && !(pindex->nStatus & BLOCK_HAVE_DATA)) {
             // If pruning or running under an assumeutxo snapshot, only go
             // back as far as we have data.
-            LogPrintf("VerifyDB(): block verification stopping at height %d (pruning, no data)\n", pindex->nHeight);
+            LogPrintf("VerifyDB(): block verification stopping at height %d (no data). This could be due to pruning or use of an assumeutxo snapshot.\n", pindex->nHeight);
+            skipped_no_block_data = true;
             break;
         }
         CBlock block;
@@ -4188,6 +4190,9 @@ VerifyDBResult CVerifyDB::VerifyDB(
     if (skipped_l3_checks) {
         return VerifyDBResult::SKIPPED_L3_CHECKS;
     }
+    if (skipped_no_block_data) {
+        return VerifyDBResult::SKIPPED_MISSING_BLOCKS;
+    }
     return VerifyDBResult::SUCCESS;
 }