src/fflib/lgfem.cpp:6193: error: NULL_DEREFERENCE
  pointer `a` last assigned on line 6191 could be null and is dereferenced at line 6193, column 14.
Showing all 5 steps of the trace


src/fflib/lgfem.cpp:6189:2: start of procedure code
6187.   }
6188.    
6189.    E_F0 * Op_CopyArray::code(const basicAC_F0 & args) const  {
         ^
6190.          E_F0 * ret=0;
6191.         const E_Array & a= *dynamic_cast<const E_Array*>(args[0].LeftValue());

src/fflib/lgfem.cpp:6190:8: 
6188.    
6189.    E_F0 * Op_CopyArray::code(const basicAC_F0 & args) const  {
6190. >        E_F0 * ret=0;
6191.         const E_Array & a= *dynamic_cast<const E_Array*>(args[0].LeftValue());
6192.         const E_Array & b= *dynamic_cast<const E_Array*>(args[1].LeftValue());

src/fflib/lgfem.cpp:6191:7: Skipping LeftValue: function or method not found
6189.    E_F0 * Op_CopyArray::code(const basicAC_F0 & args) const  {
6190.          E_F0 * ret=0;
6191.         const E_Array & a= *dynamic_cast<const E_Array*>(args[0].LeftValue());
              ^
6192.         const E_Array & b= *dynamic_cast<const E_Array*>(args[1].LeftValue());
6193.         int na=a.size();

src/fflib/lgfem.cpp:6192:7: Skipping LeftValue: function or method not found
6190.          E_F0 * ret=0;
6191.         const E_Array & a= *dynamic_cast<const E_Array*>(args[0].LeftValue());
6192.         const E_Array & b= *dynamic_cast<const E_Array*>(args[1].LeftValue());
              ^
6193.         int na=a.size();
6194.         int nb=b.size();

src/fflib/lgfem.cpp:6193:7: 
6191.         const E_Array & a= *dynamic_cast<const E_Array*>(args[0].LeftValue());
6192.         const E_Array & b= *dynamic_cast<const E_Array*>(args[1].LeftValue());
6193. >       int na=a.size();
6194.         int nb=b.size();
6195.         if (na != nb )