From 219f67d1623847cd6644013de7af95c1c64a5a91 Mon Sep 17 00:00:00 2001
From: benthompson15 <ben.thompson.015@gmail.com>
Date: Thu, 16 Jul 2020 13:57:18 -0500
Subject: [PATCH] MCOL-4181: Possible setting of ci->stats.fUser to NULL
 causing crash.

---
 dbcon/mysql/ha_mcs_impl.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/dbcon/mysql/ha_mcs_impl.cpp b/dbcon/mysql/ha_mcs_impl.cpp
index b462fd99d..5cab0cfa1 100644
--- a/dbcon/mysql/ha_mcs_impl.cpp
+++ b/dbcon/mysql/ha_mcs_impl.cpp
@@ -5041,7 +5041,14 @@ int ha_cs_impl_pushdown_init(mcs_handler_info* handler_info, TABLE* table)
     {
         ci->stats.reset(); // reset query stats
         ci->stats.setStartTime();
-        ci->stats.fUser = thd->main_security_ctx.user;
+        if (thd->main_security_ctx.user)
+        {
+            ci->stats.fUser = thd->main_security_ctx.user;
+        }
+        else
+        {
+            ci->stats.fUser = "";
+        }
 
         if (thd->main_security_ctx.host)
             ci->stats.fHost = thd->main_security_ctx.host;