Question

I am working on a class for an existing main program, and it is throwing a segfault on the delete [] line. I am not quite sure why it is doing this. I have asked the professor and I was told to reread the section about how pointers get corrupted. Any help would be appreciated! The relevant code is below.

From the main:

Point* v = new Point[nVertices];
for (int i = 0; i < nVertices; ++i)
  in >> v[i].x >> v[i].y;
Asteroid aster1 (nVertices, v);
delete [] v;

The class section for asteroid’s constructor:

Asteroid::Asteroid(int nVertices, Point vertexPoints[]){
    numVertices = nVertices;
    for (int i = 0; i < numVertices; i++){
        vertices[i] = vertexPoints[i];
    }
}

And the .h section if that is significant:

class Asteroid{
    int numVertices;
    Point vertices[];
public:
    //Attributes
    Asteroid (int,Point*);

Answer 1

It looks very unlikely that the segfault is at the delete[] line. Much more likely that it occurs in the Asteroid constructor, as you are already attempting to access vertices before you’ve created the array which is supposed to contain them.