Re: [oce-dev] Segfaults in master

[D. Barbier]

On 2013/5/26 Luke Parry wrote:
> Dear OCE Team,
>
> Hi, I am one of the developers from FreeCAD. Having recently updated from
> OCE master, after the 6.6 patch, I have come across some segfaults that are
> guaranteed every time. The segfaults appear to occur when the object
> destructor is called automatically at the end of the function scope.
>
> This occurs in our own source code at the end of our function scope:
>
> TopoDS_Face face = validateFace(mkFace.Face());
> BRepAdaptor_Surface adapt(face);
> IntTools_FClass2d class2d(face, prec);
> Handle_Geom_Surface surf = new Geom_Plane(adapt.Plane());
> Handle_ShapeAnalysis_Surface as = new ShapeAnalysis_Surface(surf);
>
> TopExp_Explorer xp(wire2,TopAbs_VERTEX);
> while (xp.More()) {
> TopoDS_Vertex v = TopoDS::Vertex(xp.Current());
> gp_Pnt p = BRep_Tool::Pnt(v);
> gp_Pnt2d uv = as->ValueOfUV(p, prec);
> if (class2d.Perform(uv) == TopAbs_IN)
> return true;
>
> with the following stack trace from GDB.
>
> #0 Handle_Standard_Transient::EndScope()() at /usr/lib/libTKernel.so.5
[...]
> I have spoke to another developer who has compiled from the standard OCC 6.6
> release and he does not experience any segfaults.
>
> What are your thoughts on this? Is there something obvious that we have
> missed out specific to OCE changes or are these regressions specific to OCE?

Hello Luke,

There is some library mismatch, current master builds libTKernel.so.7
and not libTKernel.so.5.

Denis