src/mpi/parallelempi.cpp:459: error: NULL_DEREFERENCE
  pointer `mA` last assigned on line 458 could be null and is dereferenced at line 459, column 17.
Showing all 18 steps of the trace


src/mpi/parallelempi.cpp:448:3: start of procedure Bcast<double>
446.     
447.     template<class R>
448.     const MPIrank & Bcast(Matrice_Creuse<R> &  a) const
         ^
449.       {
450.         if(verbosity>100) 

src/mpi/parallelempi.cpp:450:10: Taking false branch
448.     const MPIrank & Bcast(Matrice_Creuse<R> &  a) const
449.       {
450.         if(verbosity>100) 
                ^
451.   	cout << mpirank <<  ":  MPI Bcast " << who << "  (Matrice_Creuse &) " << &a << " " << a.A << endl;
452.         MatriceMorse<R> *mA=0;

src/mpi/parallelempi.cpp:452:7: 
450.         if(verbosity>100) 
451.   	cout << mpirank <<  ":  MPI Bcast " << who << "  (Matrice_Creuse &) " << &a << " " << a.A << endl;
452. >       MatriceMorse<R> *mA=0;
453.         int ldata[4]={0,0,0,0};
454.         if(  who == mpirank)  

src/mpi/parallelempi.cpp:453:7: 
451.   	cout << mpirank <<  ":  MPI Bcast " << who << "  (Matrice_Creuse &) " << &a << " " << a.A << endl;
452.         MatriceMorse<R> *mA=0;
453. >       int ldata[4]={0,0,0,0};
454.         if(  who == mpirank)  
455.   	{

src/mpi/parallelempi.cpp:454:12: Taking true branch
452.         MatriceMorse<R> *mA=0;
453.         int ldata[4]={0,0,0,0};
454.         if(  who == mpirank)  
                  ^
455.   	{
456.   	  if(a.A)

src/mpi/parallelempi.cpp:456:7: 
454.         if(  who == mpirank)  
455.   	{
456. > 	  if(a.A)
457.   	    {
458.   	      mA= a.A->toMatriceMorse();

src/femlib/RefCounter.hpp:93:2: start of procedure operator_MatriceCreuse<double>_*
  91.    //void destroy() const { destroyPtr(c);}
  92.    void destroy()  { destroyPtr(c);c=0;}
  93.    operator  T * ()   const { return c;}
         ^
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}

src/femlib/RefCounter.hpp:93:29: 
  91.    //void destroy() const { destroyPtr(c);}
  92.    void destroy()  { destroyPtr(c);c=0;}
  93. >  operator  T * ()   const { return c;}
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}

src/femlib/RefCounter.hpp:93:38: return from a call to CountPointer<MatriceCreuse<double>>_operator_MatriceCreuse<double>_*
  91.    //void destroy() const { destroyPtr(c);}
  92.    void destroy()  { destroyPtr(c);c=0;}
  93.    operator  T * ()   const { return c;}
                                             ^
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}

src/mpi/parallelempi.cpp:456:7: Taking true branch
454.         if(  who == mpirank)  
455.   	{
456.   	  if(a.A)
             ^
457.   	    {
458.   	      mA= a.A->toMatriceMorse();

src/mpi/parallelempi.cpp:458:8: 
456.   	  if(a.A)
457.   	    {
458. > 	      mA= a.A->toMatriceMorse();
459.   	      ldata[0]=mA->n;
460.   	      ldata[1]=mA->m;

src/femlib/RefCounter.hpp:96:3: start of procedure operator->
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}
  96.     T* operator->() const {return c;}
          ^
  97.    bool operator==(const  CountPointer & n) const {return  n.c ==c;}
  98.    bool operator!=(const  CountPointer & n) const {return  n.c !=c;}

src/femlib/RefCounter.hpp:96:26: 
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}
  96. >   T* operator->() const {return c;}
  97.    bool operator==(const  CountPointer & n) const {return  n.c ==c;}
  98.    bool operator!=(const  CountPointer & n) const {return  n.c !=c;}

src/femlib/RefCounter.hpp:96:35: return from a call to CountPointer<MatriceCreuse<double>>_operator->
  94.    operator   T & () const  {return *c;}
  95.     T& operator*() const {return *c;}
  96.     T* operator->() const {return c;}
                                          ^
  97.    bool operator==(const  CountPointer & n) const {return  n.c ==c;}
  98.    bool operator!=(const  CountPointer & n) const {return  n.c !=c;}

src/femlib/MatriceCreuse.hpp:397:3: start of procedure toMatriceMorse
  395.     virtual R * pij(int i,int j) const =0; // Add FH 
  396.     virtual  void  resize(int n,int m)  {AFAIRE("MatriceCreuse::resize");}  // a faire dans les classe derive ... // add march 2009  FH 
  397.     virtual MatriceMorse<R> *toMatriceMorse(bool transpose=false,bool copy=false) const {return 0;} // not 
           ^
  398.     virtual bool addMatTo(R coef,std::map< pair<int,int>, R> &mij,bool trans=false,int ii00=0,int jj00=0,bool cnj=false,double threshold=0.,const bool keepSym=false)=0;
  399.     // Add FH april 2005

src/femlib/MatriceCreuse.hpp:397:88: 
  395.     virtual R * pij(int i,int j) const =0; // Add FH 
  396.     virtual  void  resize(int n,int m)  {AFAIRE("MatriceCreuse::resize");}  // a faire dans les classe derive ... // add march 2009  FH 
  397. >   virtual MatriceMorse<R> *toMatriceMorse(bool transpose=false,bool copy=false) const {return 0;} // not 
  398.     virtual bool addMatTo(R coef,std::map< pair<int,int>, R> &mij,bool trans=false,int ii00=0,int jj00=0,bool cnj=false,double threshold=0.,const bool keepSym=false)=0;
  399.     // Add FH april 2005

src/femlib/MatriceCreuse.hpp:397:97: return from a call to MatriceCreuse<double>_toMatriceMorse
  395.     virtual R * pij(int i,int j) const =0; // Add FH 
  396.     virtual  void  resize(int n,int m)  {AFAIRE("MatriceCreuse::resize");}  // a faire dans les classe derive ... // add march 2009  FH 
  397.     virtual MatriceMorse<R> *toMatriceMorse(bool transpose=false,bool copy=false) const {return 0;} // not 
                                                                                                         ^
  398.     virtual bool addMatTo(R coef,std::map< pair<int,int>, R> &mij,bool trans=false,int ii00=0,int jj00=0,bool cnj=false,double threshold=0.,const bool keepSym=false)=0;
  399.     // Add FH april 2005

src/mpi/parallelempi.cpp:459:8: 
457.   	    {
458.   	      mA= a.A->toMatriceMorse();
459. > 	      ldata[0]=mA->n;
460.   	      ldata[1]=mA->m;
461.   	      ldata[2]=mA->nbcoef;