From 1e48be92aa7cb86dcd37e87135b013827448f01c Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Wed, 28 Jul 2021 21:50:20 -0400
Subject: [PATCH] avoid segfault

---
 src/ML-RANN/pair_rann.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ML-RANN/pair_rann.cpp b/src/ML-RANN/pair_rann.cpp
index 00043323c3..faab2d1b2f 100644
--- a/src/ML-RANN/pair_rann.cpp
+++ b/src/ML-RANN/pair_rann.cpp
@@ -76,7 +76,7 @@ static const char cite_ml_rann_package[] =
 
 PairRANN::PairRANN(LAMMPS *lmp) : Pair(lmp)
 {
-  lmp->citeme->add(cite_ml_rann_package);
+  if (lmp->citeme) lmp->citeme->add(cite_ml_rann_package);
 
   //initialize ints and bools
   single_enable = 0;