From 118c5ea2241af4b146319b3861dbfd01a2dcc1be Mon Sep 17 00:00:00 2001
From: cl507523 <cl507523@antgroup.com>
Date: Thu, 26 Feb 2026 06:36:31 +0000
Subject: [PATCH] fix(evm): use deque for execution cache to prevent pointer
 invalidation

Runtime functions like evmGetExtCodeHash and evmGetKeccak256 return
pointers to bytes32 values stored in ExecutionCache vectors. The JIT
defers loading these bytes until the value is consumed by a later
opcode. When a second push_back triggers vector reallocation, all
previously returned pointers become dangling, causing the JIT to read
garbage data and spuriously trip the out-of-gas or overflow traps.

Replace std::vector with std::deque for ExtcodeHashes and
Keccak256Results, since deque::push_back preserves references to
existing elements.

Made-with: Cursor
---
 src/runtime/evm_instance.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/runtime/evm_instance.h b/src/runtime/evm_instance.h
index a21a36b9..0570d1a7 100644
--- a/src/runtime/evm_instance.h
+++ b/src/runtime/evm_instance.h
@@ -11,6 +11,7 @@
 #include "runtime/evm_module.h"
 #include "runtime/instance.h"
 #include <array>
+#include <deque>
 #include <limits>
 #include <memory>
 
@@ -141,8 +142,8 @@ class EVMInstance final : public RuntimeObject<EVMInstance> {
     std::unordered_map<std::pair<const evmc_message *, uint64_t>, evmc::bytes32,
                        PairHash>
         CalldataLoads;
-    std::vector<evmc::bytes32> ExtcodeHashes;
-    std::vector<evmc::bytes32> Keccak256Results;
+    std::deque<evmc::bytes32> ExtcodeHashes;
+    std::deque<evmc::bytes32> Keccak256Results;
     bool TxContextCached = false;
   };