[tsencic]

When I tried to run dieselEngineFoam on a simulation that run perfectly before I obtained this:

--> FOAM FATAL ERROR : hanging pointer, cannot dereference

From function PtrList::operator[]
in file /home/tom/OpenFOAM/OpenFOAM-1.3/src/OpenFOAM/lnInclude/PtrListI.H at line 92.
FOAM aborting

What is the reason? How can I solve the problem?

[stefanke]

Well, this information is not enough to say what is going wrong here. Is there no backtrace information available?

Check your dictionary files carefully!

[tsencic]

This is the complete message:

Executing: /home/tom/OpenFOAM/OpenFOAM-1.3/applications/bin/linuxGcc4DPOpt/dieselEngineFoam /home/tom/OpenFOAM/tom-1.3/run/. EMD8-spray > /home/tom/OpenFOAM/tom-1.3/run/./EMD8-spray/log &
tom@snjofko:~/OpenFOAM/tom-1.3/run>

--> FOAM FATAL ERROR : hanging pointer, cannot dereference

From function PtrList::operator[]
in file /home/tom/OpenFOAM/OpenFOAM-1.3/src/OpenFOAM/lnInclude/PtrListI.H at line 92.

FOAM aborting

Foam::error::printStack(Foam:stream&)
Foam::error::abort()
/home/tom/OpenFOAM/OpenFOAM-1.3/applications/bin/linuxGcc4DPOpt/dieselEngineFoam [0x806fd9a]
/home/tom/OpenFOAM/OpenFOAM-1.3/applications/bin/linuxGcc4DPOpt/dieselEngineFoam [0x805ead2]
__libc_start_main
__gxx_personality_v0

The dictionary files are coppied from a previous, succesfull simulation.

[zqlhzx]

Originally Posted by tsencic

When I tried to run dieselEngineFoam on a simulation that run perfectly before I obtained this:

--> FOAM FATAL ERROR : hanging pointer, cannot dereference

From function PtrList:perator[]
in file /home/tom/OpenFOAM/OpenFOAM-1.3/src/OpenFOAM/lnInclude/PtrListI.H at line 92.
FOAM aborting

What is the reason? How can I solve the problem?

I have the same problem with you,Do you have solver it?

[NICKTAVOUKT]

Hi all,

I'm getting a similar error with above. To give you some context I have wrote a solver which based on interFoam/waveFoam and combined it with the solid particle class in OF5

when I run it I get the following error:

--> FOAM FATAL ERROR:
hanging pointer at index 0 (size 9), cannot dereference
From function const T& Foam::UPtrList<T>:perator[](Foam::label) const [with T = Foam::fvsPatchField<double>; Foam::label = int]
in file /apps/openfoam/5.0.x/gcc/7.2.0/OpenFOAM-5.0/src/OpenFOAM/lnInclude/UPtrListI.H at line 107.
FOAM aborting
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh>::Boundary::Boundary(Foam:imen sionedField<double, Foam::surfaceMesh> const&, Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh>::Boundary const&) at ??:?
#3 Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh>::GeometricField(Foam::Geometric Field<double, Foam::fvsPatchField, Foam::surfaceMesh> const&) at ??:?
#4 ? at ??:?
#5 __libc_start_main in "/lib64/libc.so.6"
#6 ? at ??:?

could someone kindly explain what UPtrListI.H does?

Thanks,
Nick

[bbita]

Hi Nick,

I am wondering if you find the solution to this problem. I am experiencing the same issue.

Thanks.

[shanvach]

Hi all,

I have been getting this error while my running twoPhaseEulerFoam code. I have added a file called scalarTransport.H that solves for Scalar Transport Equation in addition to solving of the phases.

My scalarTransport.H is as follows:

dimensionedScalar dimen 
( 
"dimen", 
dimensionSet(0,0,1,0,0,0,0), 
scalar(1.0) 
); 
dimensionedScalar dimen1 
( 
"dimen1", 
dimensionSet(0,0,-1,0,0,0,0), 
scalar(1.0) 
); 
volTensorField grU_2 = (fvc::grad(U2))*dimen;
volScalarField sc = grU_2 && (grU_2 + grU_2.T());
const scalar a  = 4e-6;

dimensionedScalar dir_ste 
( 
"dir_ste", 
dimensionSet(0,0,2,0,0,0,0), 
scalar(1.0) 
); 
//const scalar a  = 4e-6;
const scalar K = 1;
volScalarField dsid = 0.7*.3*a*a*sc*alpha2*alpha2*dir_ste*dimen1*dimen1;
const scalar dbr = (1.380648e-23)*300/(6*3.142*(1.5e-3)*(4e-6));
volScalarField dbro = ((1.0-alpha2)/(1+0.95*alpha2))*(dbr/K);

volScalarField dnp = (dsid + dbro)*DT; 

		
fvScalarMatrix scalarEqn
             
 (
   		
  fvm::ddt(psi)             
 		
+ fvm::div(phi2,psi)        
 		
- fvm::laplacian(dnp,psi) 
		
);
 

  scalarEqn.solve();

The code compiles correctly but gives the following error at runtime.

--> FOAM FATAL ERROR: 
hanging pointer at index 0 (size 3), cannot dereference

    From function const T& Foam::UPtrList<T>::operator[](Foam::label) const [with T = Foam::fvPatchField<double>; Foam::label = int]
    in file /usr/local/apps/OpenFOAM/gcc482-v1706/OpenFOAM-v1706/src/OpenFOAM/lnInclude/UPtrListI.H at line 107.

FOAM aborting

#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::error::abort() at ??:?
#2  Foam::UPtrList<Foam::fvPatchField<double> >::operator[](int) const at ??:?
#3  Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::Boundary::Boundary(Foam::DimensionedField<double, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::Boundary const&) at ??:?
#4  Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::GeometricField(Foam::IOobject const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:?
#5  ? at ??:?
#6  __libc_start_main in "/lib64/libc.so.6"
#7  ? at ??:?

How do I rectify this?
Your help in this matter is greatly appreciated.

Thanks and Regards,
Shantanu

[shiyu]

Hi all,
Did anyone figure this problem out? I have exactly the same issue as above.

Thanks in advance.

Cheers,Shiyu

[ttsurvase]

The issue is the pointer created by user is empty or null. Check what is size of pointerlist. In my case, i didnt assigned value to ptrlist and i was calling using[] operator. Hope it helps.