From 29b3265dc7c9dfa246f6e8afb99f2bd7feee59bd Mon Sep 17 00:00:00 2001
From: Trent Nelson <trent@solana.com>
Date: Tue, 4 Aug 2020 21:23:35 -0600
Subject: [PATCH] Sanitize transactions during RPC preflight test

---
 runtime/src/bank.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index a88557abaa..eb19b7c65a 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -47,6 +47,7 @@ use solana_sdk::{
     native_loader, nonce,
     program_utils::limited_deserialize,
     pubkey::Pubkey,
+    sanitize::Sanitize,
     signature::{Keypair, Signature},
     slot_hashes::SlotHashes,
     slot_history::SlotHistory,
@@ -1346,7 +1347,11 @@ impl Bank {
         &'a self,
         txs: &'b [Transaction],
     ) -> TransactionBatch<'a, 'b> {
-        let mut batch = TransactionBatch::new(vec![Ok(()); txs.len()], &self, txs, None);
+        let lock_results: Vec<_> = txs
+            .iter()
+            .map(|tx| tx.sanitize().map_err(|e| e.into()))
+            .collect();
+        let mut batch = TransactionBatch::new(lock_results, &self, txs, None);
         batch.needs_unlock = false;
         batch
     }