From 9ec28171c8909b699e1ed3916891acd72607e6ee Mon Sep 17 00:00:00 2001
From: Andreas Suter <andreas.suter@psi.ch>
Date: Mon, 23 Feb 2026 12:52:26 +0100
Subject: [PATCH] make sure that the requested pointer is not a nullptr.

---
 src/classes/PRunBase.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/classes/PRunBase.cpp b/src/classes/PRunBase.cpp
index 6ab053ef..8be39ebe 100644
--- a/src/classes/PRunBase.cpp
+++ b/src/classes/PRunBase.cpp
@@ -172,6 +172,11 @@ void PRunBase::DeadTimeCorrection(std::vector<PDoubleVector> &histos, PUIntVecto
 {
   PRawRunData* runData = fRawData->GetRunData(*fRunInfo->GetRunName());
 
+  if (runData == nullptr) {
+    std::cerr << std::endl << "**WARNING** PRunBase::DeadTimeCorrection: couldn't get data from '" << *fRunInfo->GetRunName() << "'" << std::endl;
+    return;
+  }
+
   if (!runData->DeadTimeCorrectionReady()) {
     std::cerr << std::endl << "**WARNING** PRunBase::DeadTimeCorrection: missing input for dead time correction" << std::endl;
     return;