From d86cd4f511e893ed88cb423f3a1768e51b039801 Mon Sep 17 00:00:00 2001
From: furszy <matiasfurszyfer@protonmail.com>
Date: Tue, 15 Jun 2021 20:07:19 -0300
Subject: [PATCH] wallet: Add missing check for backup to source wallet file.

---
 src/wallet/db.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index e715a45bb28b0..c547df0e38455 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -767,6 +767,11 @@ bool CWalletDBWrapper::Backup(const std::string& strDest)
                     pathDest /= strFile;
 
                 try {
+                    if (fs::equivalent(pathSrc, pathDest)) {
+                        LogPrintf("cannot backup to wallet source file %s\n", pathDest.string());
+                        return false;
+                    }
+
 #if BOOST_VERSION >= 107400
                     fs::copy_file(pathSrc.c_str(), pathDest, fs::copy_options::overwrite_existing);
 #elif BOOST_VERSION >= 105800 /* BOOST_LIB_VERSION 1_58 */