wallet: Avoid dropping confirmed coins

src/wallet/receive.cpp

@@ -279,8 +279,6 @@ bool CachedTxIsFromMe(const CWallet& wallet, const CWalletTx& wtx, const isminef
 bool CachedTxIsTrusted(const CWallet& wallet, const CWalletTx& wtx, std::set<uint256>& trusted_parents)
 {
     AssertLockHeld(wallet.cs_wallet);
-    // Quick answer in most cases
-    if (!wallet.chain().checkFinalTx(*wtx.tx)) return false;
     int nDepth = wallet.GetTxDepthInMainChain(wtx);
     if (nDepth >= 1) return true;
     if (nDepth < 0) return false;

src/wallet/rpc/coins.cpp

@@ -60,8 +60,8 @@ static CAmount GetReceived(const CWallet& wallet, const UniValue& params, bool b
         if (depth < min_depth
             // Coinbase with less than 1 confirmation is no longer in the main chain
             || (wtx.IsCoinBase() && (depth < 1 || !include_coinbase))
-            || (wallet.IsTxImmatureCoinBase(wtx) && !include_immature_coinbase)
+            || (wallet.IsTxImmatureCoinBase(wtx) && !include_immature_coinbase))
-            || !wallet.chain().checkFinalTx(*wtx.tx)) {
+        {
             continue;
         }
 

src/wallet/rpc/transactions.cpp

@@ -114,8 +114,8 @@ static UniValue ListReceived(const CWallet& wallet, const UniValue& params, cons
 
         // Coinbase with less than 1 confirmation is no longer in the main chain
         if ((wtx.IsCoinBase() && (nDepth < 1 || !include_coinbase))
-            || (wallet.IsTxImmatureCoinBase(wtx) && !include_immature_coinbase)
+            || (wallet.IsTxImmatureCoinBase(wtx) && !include_immature_coinbase))
-            || !wallet.chain().checkFinalTx(*wtx.tx)) {
+        {
             continue;
         }
 

src/wallet/spend.cpp

@@ -105,10 +105,6 @@ void AvailableCoins(const CWallet& wallet, std::vector<COutput>& vCoins, const C
         const uint256& wtxid = entry.first;
         const CWalletTx& wtx = entry.second;
 
-        if (!wallet.chain().checkFinalTx(*wtx.tx)) {
-            continue;
-        }
-
         if (wallet.IsTxImmatureCoinBase(wtx))
             continue;
 

test/functional/test_runner.py

@@ -308,6 +308,7 @@ BASE_SCRIPTS = [
     'feature_coinstatsindex.py --legacy-wallet',
     'feature_coinstatsindex.py --descriptors',
     'wallet_orphanedreward.py',
+    'wallet_timelock.py',
     'p2p_node_network_limited.py',
     'p2p_permissions.py',
     'feature_blocksdir.py',

test/functional/wallet_timelock.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+# Copyright (c) 2022 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import assert_equal
+
+
+class WalletLocktimeTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+
+    def skip_test_if_missing_module(self):
+        self.skip_if_no_wallet()
+
+    def run_test(self):
+        node = self.nodes[0]
+
+        mtp_tip = node.getblockheader(node.getbestblockhash())["mediantime"]
+
+        self.log.info("Get new address with label")
+        label = "timelock⌛🔓"
+        address = node.getnewaddress(label=label)
+
+        self.log.info("Send to new address with locktime")
+        node.send(
+            outputs={address: 5},
+            options={"locktime": mtp_tip - 1},
+        )
+        self.generate(node, 1)
+
+        self.log.info("Check that clock can not change finality of confirmed txs")
+        amount_before_ad = node.getreceivedbyaddress(address)
+        amount_before_lb = node.getreceivedbylabel(label)
+        list_before_ad = node.listreceivedbyaddress(address_filter=address)
+        list_before_lb = node.listreceivedbylabel(include_empty=False)
+        balance_before = node.getbalances()["mine"]["trusted"]
+        coin_before = node.listunspent(maxconf=1)
+        node.setmocktime(mtp_tip - 1)
+        assert_equal(node.getreceivedbyaddress(address), amount_before_ad)
+        assert_equal(node.getreceivedbylabel(label), amount_before_lb)
+        assert_equal(node.listreceivedbyaddress(address_filter=address), list_before_ad)
+        assert_equal(node.listreceivedbylabel(include_empty=False), list_before_lb)
+        assert_equal(node.getbalances()["mine"]["trusted"], balance_before)
+        assert_equal(node.listunspent(maxconf=1), coin_before)
+
+
+if __name__ == "__main__":
+    WalletLocktimeTest().main()