From c05acf829f458d83109ed6e715e59c8d509db030 Mon Sep 17 00:00:00 2001
From: Matt Witherspoon <32485495+spoonincode@users.noreply.github.com>
Date: Mon, 16 Mar 2020 22:13:21 -0400
Subject: [PATCH] fix potential leak in OC's wrapped_fd move assignment op

---
 .../include/eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp b/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp
index 929bc19d66f..fcb58537311 100644
--- a/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp
+++ b/libraries/chain/include/eosio/chain/webassembly/eos-vm-oc/ipc_helpers.hpp
@@ -19,6 +19,8 @@ class wrapped_fd {
       wrapped_fd& operator=(const wrapped_fd&) = delete;
       wrapped_fd(wrapped_fd&& other) : _inuse(other._inuse), _fd(other._fd) {other._inuse = false;}
       wrapped_fd& operator=(wrapped_fd&& other) {
+         if(_inuse)
+            close(_fd);
          _inuse = other._inuse;
          _fd = other._fd;
          other._inuse = false;