From ecb7f8ce3332cd21489876196e7da0331671a620 Mon Sep 17 00:00:00 2001
From: Andrea <perrotta@cern.ch>
Date: Fri, 28 Oct 2022 22:30:44 +0200
Subject: [PATCH] Deal with cases in which file is a nullptr

---
 DQMServices/FwkIO/plugins/DQMRootSource.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/DQMServices/FwkIO/plugins/DQMRootSource.cc b/DQMServices/FwkIO/plugins/DQMRootSource.cc
index 9898b81e44868..dbb80255d1e88 100644
--- a/DQMServices/FwkIO/plugins/DQMRootSource.cc
+++ b/DQMServices/FwkIO/plugins/DQMRootSource.cc
@@ -485,7 +485,7 @@ std::shared_ptr<edm::FileBlock> DQMRootSource::readFile_() {
   m_openFiles.reserve(numFiles);
 
   for (auto& fileitem : m_catalog.fileCatalogItems()) {
-    TFile* file;
+    TFile* file = nullptr;
     std::string pfn;
     std::string lfn;
     std::list<std::string> exInfo;
@@ -550,7 +550,7 @@ std::shared_ptr<edm::FileBlock> DQMRootSource::readFile_() {
       }
     }  //end loop over names of the file
 
-    if (!isGoodFile && m_skipBadFiles)
+    if (!file || (!isGoodFile && m_skipBadFiles))
       continue;
 
     std::unique_ptr<std::string> guid{file->Get<std::string>(kCmsGuid)};