diff --git a/ippl/src/Field/LField.h b/ippl/src/Field/LField.h
index 3744e4f0b6ca8328c83c565f4c213f8a80f476b4..ec10f65346e5e70c0f7bcf6b67ef36badc53117c 100644
--- a/ippl/src/Field/LField.h
+++ b/ippl/src/Field/LField.h
@@ -1,10 +1,20 @@
-// -*- C++ -*-
-/***************************************************************************
- *
- * The IPPL Framework
- *
- ***************************************************************************/
-
+//
+// Class LField
+//   Local Field class
+//
+// Copyright (c) 2003 - 2020, Paul Scherrer Institut, Villigen PSI, Switzerland
+// All rights reserved
+//
+// This file is part of OPAL.
+//
+// OPAL is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// You should have received a copy of the GNU General Public License
+// along with OPAL. If not, see <https://www.gnu.org/licenses/>.
+//
 #ifndef LFIELD_H
 #define LFIELD_H
 
@@ -47,7 +57,7 @@ template<class T, unsigned Dim>
 class LField
 {
 
-public: 
+public:
   // An iterator for the contents of this LField.
   typedef CompressedBrickIterator<T,Dim> iterator;
 
@@ -63,14 +73,14 @@ public:
   //     allocated = domain of "allocated" region, which includes guards
   //     vnode = global vnode ID number (see below)
   LField(const NDIndex<Dim>& owned,
-	 const NDIndex<Dim>& allocated,
-	 int vnode = -1);
+         const NDIndex<Dim>& allocated,
+         int vnode = -1);
 
   //UL: for pinned memory allocation
   LField(const NDIndex<Dim>& owned,
-	 const NDIndex<Dim>& allocated,
-	 int vnode,
-	 bool p);
+         const NDIndex<Dim>& allocated,
+         int vnode,
+         bool p);
 
   // Copy constructor.
   LField(const LField<T,Dim>&);
@@ -177,7 +187,7 @@ public:
 
   void AddToOverlapCache(LField<T, Dim> *newCacheItem)
     {
-      if (overlap.size() == 0) 
+      if (overlap.size() == 0)
         overlap.reserve(ToTheDim<Dim>::calc(3)-1);
       overlap.push_back(newCacheItem);
       overlapCacheInited = true;
@@ -283,8 +293,8 @@ template<class T, unsigned Dim>
 inline
 std::ostream& operator<<(std::ostream& out, const LField<T,Dim>& a)
 {
-  
-  
+
+
   a.write(out);
   return out;
 }
@@ -293,4 +303,4 @@ std::ostream& operator<<(std::ostream& out, const LField<T,Dim>& a)
 
 #include "Field/LField.hpp"
 
-#endif // LFIELD_H
+#endif // LFIELD_H
\ No newline at end of file
diff --git a/ippl/src/Field/LField.hpp b/ippl/src/Field/LField.hpp
index ba8d22ca35a687e1234f717f43eed1f36adbfdaf..927ccfa9c194a7bc1ce68d5d71b625c7c7f29156 100644
--- a/ippl/src/Field/LField.hpp
+++ b/ippl/src/Field/LField.hpp
@@ -1,29 +1,20 @@
-// -*- C++ -*-
-/***************************************************************************
- *
- * The IPPL Framework
- *
- * This program was prepared by PSI.
- * All rights in the program are reserved by PSI.
- * Neither PSI nor the author(s)
- * makes any warranty, express or implied, or assumes any liability or
- * responsibility for the use of this software
- *
- * Visit www.amas.web.psi for more details
- *
- ***************************************************************************/
-
-// -*- C++ -*-
-/***************************************************************************
- *
- * The IPPL Framework
- *
- *
- * Visit http://people.web.psi.ch/adelmann/ for more details
- *
- ***************************************************************************/
-
-// include files
+//
+// Class LField
+//   Local Field class
+//
+// Copyright (c) 2003 - 2020, Paul Scherrer Institut, Villigen PSI, Switzerland
+// All rights reserved
+//
+// This file is part of OPAL.
+//
+// OPAL is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// You should have received a copy of the GNU General Public License
+// along with OPAL. If not, see <https://www.gnu.org/licenses/>.
+//
 #include "Field/LField.h"
 
 #include "Utility/PAssert.h"
@@ -92,8 +83,8 @@ MAKE_INITIALIZER(long long)
 
 template<class T, unsigned Dim>
 LField<T,Dim>::LField(const NDIndex<Dim>& owned,
-		      const NDIndex<Dim>& allocated,
-		      int vnode)
+                      const NDIndex<Dim>& allocated,
+                      int vnode)
 : vnode_m(vnode),
   P(0),
   Pinned(false),
@@ -121,8 +112,8 @@ LField<T,Dim>::LField(const NDIndex<Dim>& owned,
 //UL: for pinned mempory allocation
 template<class T, unsigned Dim>
 LField<T,Dim>::LField(const NDIndex<Dim>& owned,
-		      const NDIndex<Dim>& allocated,
-		      int vnode, bool p)
+                      const NDIndex<Dim>& allocated,
+                      int vnode, bool p)
   : vnode_m(vnode),
     P(0),
     Pinned(p),
@@ -235,18 +226,18 @@ LField<T,Dim>::TryCompress(bool baseOnPhysicalCells)
   if (baseOnPhysicalCells)
     {
       if (CanCompressBasedOnPhysicalCells())
-	{
-	  CompressBasedOnPhysicalCells();
-	  return true;
-	}
+        {
+          CompressBasedOnPhysicalCells();
+          return true;
+        }
     }
   else
     {
       if (CanCompress() )
-	{
-	  Compress();
-	  return true;
-	}
+        {
+          Compress();
+          return true;
+        }
     }
 
   return false;
@@ -304,16 +295,16 @@ LField<T,Dim>::CanCompress(T val) const
       ADDIPPLSTAT(incCompressionCompares, 1);
 
       if (!(*mid1 == val))
-	{
-	  LFIELDMSG(dbgmsg << "Short-cut check determined we cannot ");
-	  LFIELDMSG(dbgmsg << "compress, by comparing " << *mid1<<" to ");
-	  LFIELDMSG(dbgmsg << val << " at last-alloc-domain-failed index");
-	  LFIELDMSG(dbgmsg << " of " << allocCompressIndex << endl);
-
-	  // It failed the test, so we can just keep the same index to
-	  // check next time, and return.
-	  return false;
-	}
+        {
+          LFIELDMSG(dbgmsg << "Short-cut check determined we cannot ");
+          LFIELDMSG(dbgmsg << "compress, by comparing " << *mid1<<" to ");
+          LFIELDMSG(dbgmsg << val << " at last-alloc-domain-failed index");
+          LFIELDMSG(dbgmsg << " of " << allocCompressIndex << endl);
+
+          // It failed the test, so we can just keep the same index to
+          // check next time, and return.
+          return false;
+        }
     }
 
   // Check from the beginning to the last-checked-index
@@ -328,52 +319,52 @@ LField<T,Dim>::CanCompress(T val) const
       // in cache
       T *checkptr = mid1 + 1;
       while (checkptr != end1)
-	{
-	  if (!(*checkptr++ == val))
-	    {
-	      LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
-	      LFIELDMSG(dbgmsg << (checkptr - mid1) << " compares (");
-	      LFIELDMSG(dbgmsg << *(checkptr-1) << " != " << val << ")");
-	      LFIELDMSG(dbgmsg << endl);
-	      ADDIPPLSTAT(incCompressionCompares, (checkptr - mid1));
-	      allocCompressIndex = (checkptr - ptr1) - 1;
-	      return false;
-	    }
-	}
+        {
+          if (!(*checkptr++ == val))
+            {
+              LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
+              LFIELDMSG(dbgmsg << (checkptr - mid1) << " compares (");
+              LFIELDMSG(dbgmsg << *(checkptr-1) << " != " << val << ")");
+              LFIELDMSG(dbgmsg << endl);
+              ADDIPPLSTAT(incCompressionCompares, (checkptr - mid1));
+              allocCompressIndex = (checkptr - ptr1) - 1;
+              return false;
+            }
+        }
 
       // Next, check from the first position to the last-failed-position.
       checkptr = ptr1;
       while (checkptr != mid1)
-	{
-	  if (!(*checkptr++ == val))
-	    {
-	      LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
-	      LFIELDMSG(dbgmsg << (checkptr - ptr1) + (end1 - mid1));
-	      LFIELDMSG(dbgmsg << " compares (");
-	      LFIELDMSG(dbgmsg << *(checkptr-1) << " != " << val << ")");
-	      LFIELDMSG(dbgmsg << endl);
-	      ADDIPPLSTAT(incCompressionCompares,
-			   (checkptr - ptr1) + (end1 - mid1));
-	      allocCompressIndex = (checkptr - ptr1) - 1;
-	      return false;
-	    }
-	}
+        {
+          if (!(*checkptr++ == val))
+            {
+              LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
+              LFIELDMSG(dbgmsg << (checkptr - ptr1) + (end1 - mid1));
+              LFIELDMSG(dbgmsg << " compares (");
+              LFIELDMSG(dbgmsg << *(checkptr-1) << " != " << val << ")");
+              LFIELDMSG(dbgmsg << endl);
+              ADDIPPLSTAT(incCompressionCompares,
+                           (checkptr - ptr1) + (end1 - mid1));
+              allocCompressIndex = (checkptr - ptr1) - 1;
+              return false;
+            }
+        }
     }
   else
     {
       while (ptr1 != end1)
-	{
-	  if (!(*ptr1++ == val))
-	    {
-	      LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
-	      LFIELDMSG(dbgmsg << (ptr1 - P) << " compares (");
-	      LFIELDMSG(dbgmsg << *(ptr1-1) << " != " << val << ")");
-	      LFIELDMSG(dbgmsg << endl);
-	      ADDIPPLSTAT(incCompressionCompares, (ptr1 - P));
-	      allocCompressIndex = (ptr1 - P) - 1;
-	      return false;
-	    }
-	}
+        {
+          if (!(*ptr1++ == val))
+            {
+              LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
+              LFIELDMSG(dbgmsg << (ptr1 - P) << " compares (");
+              LFIELDMSG(dbgmsg << *(ptr1-1) << " != " << val << ")");
+              LFIELDMSG(dbgmsg << endl);
+              ADDIPPLSTAT(incCompressionCompares, (ptr1 - P));
+              allocCompressIndex = (ptr1 - P) - 1;
+              return false;
+            }
+        }
     }
 
   // If we are at this point, we did not find anything that did not
@@ -403,7 +394,7 @@ bool LField<T,Dim>::CanCompressBasedOnPhysicalCells() const
   // Debugging macro
 
   LFIELDMSG(Inform dbgmsg("LField::CanCompressBasedOnPhysicalCells",
-			  INFORM_ALL_NODES));
+                          INFORM_ALL_NODES));
 
   // We definitely can't do this if compression is disabled.
   if (IpplInfo::noFieldCompression)
@@ -450,15 +441,15 @@ bool LField<T,Dim>::CanCompressBasedOnPhysicalCells() const
   for (int i=0; i < sz; ++i, ++p)
     {
       if (!(*p == val))
-	{
-	  LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
-	  LFIELDMSG(dbgmsg << i + 1 << " compares." << endl);
-	  ADDIPPLSTAT(incCompressionCompares, i + 1);
-	  ownedCompressIndex = (&(*p)) - P;
-	  LFIELDMSG(dbgmsg << "changed ownedCompressIndex to ");
-	  LFIELDMSG(dbgmsg << ownedCompressIndex << endl);
-	  return false;
-	}
+        {
+          LFIELDMSG(dbgmsg << "Found that we cannot compress, after ");
+          LFIELDMSG(dbgmsg << i + 1 << " compares." << endl);
+          ADDIPPLSTAT(incCompressionCompares, i + 1);
+          ownedCompressIndex = (&(*p)) - P;
+          LFIELDMSG(dbgmsg << "changed ownedCompressIndex to ");
+          LFIELDMSG(dbgmsg << ownedCompressIndex << endl);
+          return false;
+        }
     }
 
   // Since we made it here, we can compress.
@@ -500,7 +491,7 @@ LField<T,Dim>::Compress(const T& val)
   if (IpplInfo::noFieldCompression)
     {
       for (iterator lit = begin(); lit != end(); ++lit)
-	*lit = val;
+        *lit = val;
 
       return;
     }
@@ -586,7 +577,7 @@ void LField<T,Dim>::ReallyUncompress(bool fill_domain)
     {
       T val = *Begin;
       for (int i=0; i<n; i++)
-	P[i] = val;
+        P[i] = val;
     }
 
   // Make the Begin iterator point to the new data.
@@ -714,7 +705,7 @@ LField<T,Dim>::allocateStorage(int newsize)
 
   // Allocate the storage, creating some extra to account for offset, and
   // then add in the offset.
-  P = new T[newsize + extra];
+  P = new T[newsize + extra]();
   P += extra;
 
   ADDIPPLSTAT(incLFieldBytes, (newsize+extra)*sizeof(T));
@@ -737,7 +728,7 @@ LField<T,Dim>::deallocateStorage()
       // If so, move the P pointer back.
 
       if (IpplInfo::offsetStorage)
-	P -= (offsetBlocks*IPPL_CACHE_LINE_SIZE / sizeof(T));
+        P -= (offsetBlocks*IPPL_CACHE_LINE_SIZE / sizeof(T));
 
       delete [] P;
       P = 0;
@@ -758,11 +749,4 @@ void LField<T,Dim>::write(std::ostream& out) const
 
   for (iterator p = begin(); p!=end(); ++p)
     out << *p << " ";
-}
-
-
-/***************************************************************************
- * $RCSfile: LField.cpp,v $   $Author: adelmann $
- * $Revision: 1.1.1.1 $   $Date: 2003/01/23 07:40:26 $
- * IPPL_VERSION_ID: $Id: LField.cpp,v 1.1.1.1 2003/01/23 07:40:26 adelmann Exp $
- ***************************************************************************/
+}
\ No newline at end of file
diff --git a/ippl/src/SubField/SubFieldIter.h b/ippl/src/SubField/SubFieldIter.h
index 2e6457fdeee6035fb50eee6567c0b8781ddb833c..49cb2beda18cc915773bdc07d0311c8752cf6b87 100644
--- a/ippl/src/SubField/SubFieldIter.h
+++ b/ippl/src/SubField/SubFieldIter.h
@@ -1,13 +1,20 @@
-// -*- C++ -*-
-/***************************************************************************
- *
- * The IPPL Framework
- * 
- *
- * Visit http://people.web.psi.ch/adelmann/ for more details
- *
- ***************************************************************************/
-
+//
+// Class SubFieldIter
+//   Iterator for a subset of a BareField
+//
+// Copyright (c) 2003 - 2020, Paul Scherrer Institut, Villigen PSI, Switzerland
+// All rights reserved
+//
+// This file is part of OPAL.
+//
+// OPAL is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// You should have received a copy of the GNU General Public License
+// along with OPAL. If not, see <https://www.gnu.org/licenses/>.
+//
 #ifndef SUB_FIELD_ITER_H
 #define SUB_FIELD_ITER_H
 
@@ -31,8 +38,8 @@
 
        - two construction options, one with needed iterator args, the other
          a default constructor (this is needed by PETE).  You can also
-	 define a copy constructor, or else make sure that element-wise
-	 copying will suffice for your iterator class.
+         define a copy constructor, or else make sure that element-wise
+         copying will suffice for your iterator class.
 
        - override the versions of all the functions in the base class which
          need to be overridden, to supply the special functionality for that
@@ -42,7 +49,7 @@
 
        - add specialization in SubFieldTraits to indicate how this subset
          object can be constructed from other subset objects, and what kind
-	 of combinations of subset objects will work.
+         of combinations of subset objects will work.
 
        - static bool matchType(int t) { return (t == Type_u); } ... return
          whether the type of subset object matches the given type.  Some
@@ -56,12 +63,12 @@
        - bool findIntersection() { } ... find the intersection between a
          the current component and a given NDIndex, and return the intersection
          as an NDIndex.  Also return a boolean flag indicating if this
-	 intersection did indeed contain some points (true).  This is then used
+         intersection did indeed contain some points (true).  This is then used
          in a BrickExpression to take data from the RHS and store it into the
          LHS.  findIntersection is only called for an iterator which occurs
-	 on the LHS; if something is on the RHS, then plugBase will be called
-	 instead, with an argument of the domain as calculated by
-	 findIntersection.
+         on the LHS; if something is on the RHS, then plugBase will be called
+         instead, with an argument of the domain as calculated by
+         findIntersection.
 
        - void nextLField() { } ... for subsets which must keep track of their
          current vnode (e.g., SIndex), this increments a vnode iterator.
@@ -71,7 +78,7 @@
          in to the RHS.  This results in each SubBareField on the RHS setting
          internal iterators to point to the proper section of data
          based on any offsets it may have and on the subset from the LHS.
-	 For some subset objects, this will not depend on the given subdomain.
+         For some subset objects, this will not depend on the given subdomain.
 
        - setLFieldData(LField<T,Dim>*, NDIndex<Dim>&) ... for iterators
          which occur on the LHS of an expression, the LField referred to by
@@ -84,9 +91,9 @@
 
        - bool CanTryCompress() ... Some subset objects cannot easily be
          used on the LHS with compressed LFields.  If the new one can not
-	 (for example, if it is not possible to determine if all the points
-	 referred to by the subset have the same value), this should return
-	 false, and all the other compression routines can just be no-ops.
+         (for example, if it is not possible to determine if all the points
+         referred to by the subset have the same value), this should return
+         false, and all the other compression routines can just be no-ops.
 
  ***************************************************************************/
 
@@ -96,6 +103,7 @@
 #include "Index/SIndex.h"
 #include "Field/BareField.h"
 #include "Field/LField.h"
+#include "Utility/IpplException.h"
 #include "Utility/PAssert.h"
 #include "PETE/IpplExpressions.h"
 
@@ -120,14 +128,18 @@ public:
 
   // Construct with a SubField and the domain to use
   SubFieldIterBase(const BareField<T,Dim>& df,
-		   const typename BareField<T,Dim>::iterator_if& ldf,
-		   const S& s,
-		   unsigned int B)
+                   const typename BareField<T,Dim>::iterator_if& ldf,
+                   const S& s,
+                   unsigned int B)
     : MyBareField(&(const_cast<BareField<T,Dim> &>(df))),
       MyDomain(&(const_cast<S&>(s))),
       CurrentLField(ldf),
       MyBrackets(B) {
-	LFPtr = (*CurrentLField).second.get();
+      if (CurrentLField != getBareField().end_if()) {
+          LFPtr = (*CurrentLField).second.get();
+      } else {
+          LFPtr = nullptr;
+      }
   }
 
   // Default constructor
@@ -156,9 +168,17 @@ public:
 
   // Go to the next LField.
   typename BareField<T,Dim>::iterator_if nextLField() {
-    ++CurrentLField;
-    LFPtr = (*CurrentLField).second.get();
-    return CurrentLField;
+      if (CurrentLField != getBareField().end_if()) {
+          ++CurrentLField;
+      } else {
+          throw IpplException("SubFieldIterBase::nextLField()", "Reached the container end, no next LField!");
+      }
+      if (CurrentLField != getBareField().end_if()) {
+          LFPtr = (*CurrentLField).second.get();
+      } else {
+          LFPtr = nullptr;
+      }
+      return CurrentLField;
   }
 
   // Return the LField pointed to by LFPtr
@@ -171,7 +191,7 @@ public:
   // Use a new LField, where we use data on the given NDIndex region
   void setLFieldData(LField<T,Dim>* p, NDIndex<Dim>&)  { LFPtr = p; }
 
-  /* tjw 3/3/99: try to mimic changes made in 
+  /* tjw 3/3/99: try to mimic changes made in
      IndexedBareFieldIterator::FillGCIfNecessary:
 
   // Fill the guard cells for our field, if necessary.  We punt on
@@ -249,8 +269,8 @@ public:
 
   // Construct with a SubField and the domain to use
   SubFieldIter(const BareField<T,Dim>& df,
-	       const typename BareField<T,Dim>::iterator_if& ldf,
-	       const NDIndex<Dim>& s, unsigned int B)
+               const typename BareField<T,Dim>::iterator_if& ldf,
+               const NDIndex<Dim>& s, unsigned int B)
     : SubFieldIterBase<T,Dim,Subset_t,Dim>(df, ldf, s, B) { }
 
   // Default constructor
@@ -308,9 +328,9 @@ public:
     for ( ; lf_i != lf_e; ++lf_i) {
       // is the search domain completely within the LField we're examining?
       if ((*lf_i).second->getAllocated().contains(plugged)) {
-	// Found it.  Make this one current and go.
-	setLFieldData((*lf_i).second.get(), plugged);
-	return true;
+        // Found it.  Make this one current and go.
+        setLFieldData((*lf_i).second.get(), plugged);
+        return true;
       }
     }
 
@@ -382,8 +402,8 @@ public:
 
   // Construct with a SubField and the domain to use
   SubFieldIter(const BareField<T,Dim>& df,
-	       const typename BareField<T,Dim>::iterator_if& ldf,
-	       const SIndex<Dim>& s, unsigned int B)
+               const typename BareField<T,Dim>::iterator_if& ldf,
+               const SIndex<Dim>& s, unsigned int B)
     : SubFieldIterBase<T,Dim,Subset_t,1U>(df, ldf, s, B) {
     ComponentLF = this->getDomain().begin_iv();
     computeLSOffset();
@@ -492,7 +512,7 @@ private:
     if (this->getLFieldIter() != this->getBareField().end_if()) {
       NDIndex<Dim> owned = this->getLField()->getOwned();
       for (unsigned int d=0; d < Dim; ++d)
-	LFOffset[d] = (owned[d].first() - this->getDomain().getOffset()[d]);
+        LFOffset[d] = (owned[d].first() - this->getDomain().getOffset()[d]);
     }
   }
 };
@@ -502,7 +522,7 @@ private:
 // A specialized versions of the SubFieldIter class for an SOffset, which
 // is used to act as a single-value
 // subset object.  This overrides certain functions from the base class,
-// and provides definitions of needed functions not available in the base. 
+// and provides definitions of needed functions not available in the base.
 template<class T, unsigned int Dim>
 class SubFieldIter<T, Dim, SOffset<Dim> >
   : public SubFieldIterBase<T, Dim, SOffset<Dim>, 1U>,
@@ -516,8 +536,8 @@ public:
 
   // Construct with a SubField and the domain to use
   SubFieldIter(const BareField<T,Dim>& df,
-	       const typename BareField<T,Dim>::iterator_if& ldf,
-	       const SOffset<Dim>& s, unsigned int B)
+               const typename BareField<T,Dim>::iterator_if& ldf,
+               const SOffset<Dim>& s, unsigned int B)
     : SubFieldIterBase<T,Dim,Subset_t,1U>(df, ldf, s, B), SingleValPtr(0) { }
 
   // Default constructor
@@ -540,7 +560,7 @@ public:
       SOffset<Dim> s = this->getDomain();
       NDIndex<Dim> owned = p->getOwned();
       for (unsigned int d=0; d < Dim; ++d)
-	s[d] -= owned[d].first();
+        s[d] -= owned[d].first();
       SingleValPtr = &(p->begin().offset(s.begin()));
     }
   }
@@ -620,11 +640,4 @@ private:
   NDIndex<Dim> Component;
 };
 
-
-#endif // SUB_FIELD_ITER_H
-
-/***************************************************************************
- * $RCSfile: SubFieldIter.h,v $   $Author: adelmann $
- * $Revision: 1.1.1.1 $   $Date: 2003/01/23 07:40:33 $
- * IPPL_VERSION_ID: $Id: SubFieldIter.h,v 1.1.1.1 2003/01/23 07:40:33 adelmann Exp $ 
- ***************************************************************************/
+#endif // SUB_FIELD_ITER_H
\ No newline at end of file
diff --git a/tests/classic_src/Fields/Interpolation/NDGridTest.cpp b/tests/classic_src/Fields/Interpolation/NDGridTest.cpp
index f7791fa797476bd442d5ed1ba9cf3266ff37418d..6753c036f5bd43b14a664bfc24ad96ed93981097 100644
--- a/tests/classic_src/Fields/Interpolation/NDGridTest.cpp
+++ b/tests/classic_src/Fields/Interpolation/NDGridTest.cpp
@@ -148,7 +148,7 @@ TEST_F(NDGridTest, CoordVectorTest) {  // and newCoordArray
             EXPECT_NEAR(coords_v[j], gridCoordinates[i][j], 1e-12);
             EXPECT_NEAR(coords_a[j], gridCoordinates[i][j], 1e-12);
         }
-        delete coords_a;
+        delete[] coords_a;
     }
 }
 
diff --git a/tests/ippl_src/Field/Periodic.cpp b/tests/ippl_src/Field/Periodic.cpp
index 57c425b3ee5c5640f8fc37adbc6f68eef96adb9e..263f088b36ac224e02150081c61cb4f6f69105a1 100644
--- a/tests/ippl_src/Field/Periodic.cpp
+++ b/tests/ippl_src/Field/Periodic.cpp
@@ -62,7 +62,7 @@ TEST(Field, PeriodicBC)
     int i,j,k;
     for (j=0; j<3; j++) {
         for (i=0; i<3; i++) {
-            for(k=0; k<3; k++) {
+            for (k=0; k<3; k++) {
                 if (i==1 && j==1 && k==1)
                     assign(cA[i][j][k], 1.0);
                 else
@@ -71,7 +71,11 @@ TEST(Field, PeriodicBC)
         }
     }
     // Print reference values, then assign values ofsetting across boundaries
-    // and print results, Cell-centered case:
+    // and print results.
+    // For printing we need to reset the output stream (needed when running multiple tests)
+    setInform(*IpplInfo::Info);
+
+    // Cell-centered case:
 
     std::cout << "++++++++++cA+++++++++++" << std::endl ;
     fp3(cA);