Merge #13527: policy: Remove promiscuousmempoolflags

faa24441ec047ec336b86f586016b9d318c1c0ad policy: Remove promiscuousmempoolflags (MarcoFalke)

Pull request description:

  It seems odd to clutter validation code with features that can only ever be used for testing (testnet or regtest). Removing that test-only code makes the mempool logic less painful to understand and easier to reason about when changed or refactored in the future.

Tree-SHA512: 3b897aa9604ac8d82ebe9573c6efd468c93ddaa08d378ebc902e247b7aa6c68fcde71e5b449c08f17a067146cdc66dc50a67ce06d07607c27e5189a49c3fba3f

1 files changed, 2 insertions, 17 deletions

diff --git a/src/validation.cpp b/src/validation.cpp
index 702a8d7e05..fceb135854 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -894,10 +894,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
             }
         }
 
-        unsigned int scriptVerifyFlags = STANDARD_SCRIPT_VERIFY_FLAGS;
-        if (!chainparams.RequireStandard()) {
-            scriptVerifyFlags = gArgs.GetArg("-promiscuousmempoolflags", scriptVerifyFlags);
-        }
+        constexpr unsigned int scriptVerifyFlags = STANDARD_SCRIPT_VERIFY_FLAGS;
 
         // Check against previous transactions
         // This is done last to help prevent CPU exhaustion denial-of-service attacks.
@@ -932,20 +929,8 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool
         // transactions into the mempool can be exploited as a DoS attack.
         unsigned int currentBlockScriptVerifyFlags = GetBlockScriptFlags(chainActive.Tip(), Params().GetConsensus());
         if (!CheckInputsFromMempoolAndCache(tx, state, view, pool, currentBlockScriptVerifyFlags, true, txdata)) {
-            // If we're using promiscuousmempoolflags, we may hit this normally
-            // Check if current block has some flags that scriptVerifyFlags
-            // does not before printing an ominous warning
-            if (!(~scriptVerifyFlags & currentBlockScriptVerifyFlags)) {
-                return error("%s: BUG! PLEASE REPORT THIS! ConnectInputs failed against latest-block but not STANDARD flags %s, %s",
+            return error("%s: BUG! PLEASE REPORT THIS! CheckInputs failed against latest-block but not STANDARD flags %s, %s",
                     __func__, hash.ToString(), FormatStateMessage(state));
-            } else {
-                if (!CheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true, false, txdata)) {
-                    return error("%s: ConnectInputs failed against MANDATORY but not STANDARD flags due to promiscuous mempool %s, %s",
-                        __func__, hash.ToString(), FormatStateMessage(state));
-                } else {
-                    LogPrintf("Warning: -promiscuousmempool flags set to not include currently enforced soft forks, this may break mining or otherwise cause instability!\n");
-                }
-            }
         }
 
         if (test_accept) {