my copy constructor causes segmentation fault

[billconan]

hello guys,

i'm working with someone on a project. i always use windows, but he uses linux.

so i need to move my code to linux before giving him.

my code runs fine on my machine under linux, but he did some modification on the code and then we had a segmentation fault.

the problematic line is a rather simple copy constructor that i implemented by myself, not generated by the compiler:

Vector(const Vector &in):x(in.x),y(in.y),z(in.z)
{
}

i don't know why this line can be a problem. please help.

thank you so much

[billconan]

the error happens when i trying to do this line:

Math::Vector pre=edgeAroundVertexIter->middlePoint;

the error message also says:

const CGAL::HalfedgeDS_in_place_list_halfedge<CGAL::I_Polyhedron_halfedge<My_edge<CGAL::HalfedgeDS_list_types<CGAL::Cartesian<float>, CGAL::I_Polyhedron_derived_items_3<My_items>, std::allocator<int> > > > > &) @0x0: <error reading variable>
(gdb) p edgeAroundVertexIter->middlePoint

this is weird, because i'm pretty sure middlePoint is a member and there was no compiling error at all.

[Lindley]

Most likely something is corrupting middlePoint prior to that. Run valgrind on it, that might give you a clue.

[ishaypeled]

Hi,
Please provide the full class code, it is impossible to tell what went wrong just by looking at two lines...