From 2ebe1f019fb370251e4c932dd1d06ba7c4d705a2 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Mon, 26 Aug 2024 21:14:44 -0400
Subject: [PATCH] avoid uninitialized data access in case there are no atoms
 owned by a process

---
 src/REACTION/fix_bond_react.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/REACTION/fix_bond_react.cpp b/src/REACTION/fix_bond_react.cpp
index b80231cf44..8ed21ce2ba 100644
--- a/src/REACTION/fix_bond_react.cpp
+++ b/src/REACTION/fix_bond_react.cpp
@@ -3714,7 +3714,7 @@ int FixBondReact::insert_atoms_setup(tagint **my_update_mega_glove, int iupdate)
   tagint *molecule = atom->molecule;
   int nlocal = atom->nlocal;
 
-  tagint maxmol_all;
+  tagint maxmol_all = 0;;
   for (int i = 0; i < nlocal; i++) maxmol_all = MAX(maxmol_all,molecule[i]);
   MPI_Allreduce(MPI_IN_PLACE,&maxmol_all,1,MPI_LMP_TAGINT,MPI_MAX,world);