From d5f8f36442bfc14ba49c4090f465f87afc65a24e Mon Sep 17 00:00:00 2001
From: Stan Moore <stanmoore1@gmail.com>
Date: Thu, 15 Dec 2016 15:48:09 -0700
Subject: [PATCH] Change to fix_property_atom to allow virtual override of
 grow_arrays() function

---
 src/fix_property_atom.cpp | 3 ++-
 src/fix_property_atom.h   | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/fix_property_atom.cpp b/src/fix_property_atom.cpp
index b83aadc95d..002260d8f0 100644
--- a/src/fix_property_atom.cpp
+++ b/src/fix_property_atom.cpp
@@ -134,7 +134,6 @@ FixPropertyAtom::FixPropertyAtom(LAMMPS *lmp, int narg, char **arg) :
   // register with Atom class
 
   nmax_old = 0;
-  grow_arrays(atom->nmax);
   atom->add_callback(0);
   atom->add_callback(1);
   if (border) atom->add_callback(2);
@@ -190,6 +189,8 @@ int FixPropertyAtom::setmask()
 
 void FixPropertyAtom::init()
 {
+  grow_arrays(atom->nmax);
+
   // error if atom style has changed since fix was defined
   // don't allow this b/c user could change to style that defines molecule,q
 
diff --git a/src/fix_property_atom.h b/src/fix_property_atom.h
index 77a41f393a..d923d76cac 100644
--- a/src/fix_property_atom.h
+++ b/src/fix_property_atom.h
@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class FixPropertyAtom : public Fix {
  public:
   FixPropertyAtom(class LAMMPS *, int, char **);
-  ~FixPropertyAtom();
+  virtual ~FixPropertyAtom();
   int setmask();
   void init();
 
@@ -38,7 +38,7 @@ class FixPropertyAtom : public Fix {
   void write_data_section_keyword(int, FILE *);
   void write_data_section(int, FILE *, int, double **, int);
 
-  void grow_arrays(int);
+  virtual void grow_arrays(int);
   void copy_arrays(int, int, int);
   int pack_border(int, int *, double *);
   int unpack_border(int, int, double *);
@@ -50,7 +50,7 @@ class FixPropertyAtom : public Fix {
   int maxsize_restart();
   double memory_usage();
 
- private:
+ protected:
   int nvalue,border;
   int molecule_flag,q_flag,rmass_flag;
   int *style,*index;