0000104: cellCells() gives segmentation fault on non-orthogonal mesh - OpenFOAM® Bugs Reporting

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Date Submitted

Last Update

0000104

OpenFOAM

[All Projects] Bug

public

2010-12-08 21:06

2010-12-09 09:54

Reporter

doedmund

Assigned To

mattijs

Priority

normal

Severity

crash

Reproducibility

sometimes

Status

closed

Resolution

no change required

Platform

Linux

Ubuntu

OS Version

10.04

Product Version

1.7.x

Target Version

Fixed in Version

1.7.x

Summary

0000104: cellCells() gives segmentation fault on non-orthogonal mesh

Description

When the cellCells function is used to create a labelList of a cell's neighbours, the program crashes giving a segmentation fault unless the mesh is completely orthogonal.

Here is an example of the code used:
label probeCell = mesh_.findCell(probePoint); //Label cell probePoint is in
const labelList& probeCellNeighbours = mesh_.cellCells()[probeCell];

The first line executes fine. The second line using cellCells() works fine on a flat plate mesh made in blockMesh. When the second line is used on a structured mesh around an airfoil (for instance, the airFoil2D mesh in the simpleFoam tutorials), it gives a segmentation fault and crashes the program. It seems to hit some cells and make an infinitely long list of neighbors until it crashes.

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Notes
(0000172) mattijs (manager) 2010-12-09 09:54	Check the return value of your call to findCell. Most likely it is -1 (= point not in any cell).

Issue History
Date Modified	Username	Field	Change
2010-12-08 21:06	doedmund	New Issue
2010-12-09 09:54	mattijs	Note Added: 0000172
2010-12-09 09:54	mattijs	Status	new => closed
2010-12-09 09:54	mattijs	Assigned To	=> mattijs
2010-12-09 09:54	mattijs	Resolution	open => no change required
2010-12-09 09:54	mattijs	Fixed in Version	=> 1.7.x