Examples of errors detected by the V3171 diagnostic

V3171. Potentially negative value is used as the size of an array.

ScottPlot

V3171 The value used as the size of an array could reach -1. Consider inspecting: PlotHeights.Count - 1. ScottPlot DraggableRows.cs 42

public class DraggableRows() : IMultiplotLayout
{

  readonly List<float> PlotHeights = [];

  ....

  float[] GetDividerPositions()
  {
    if (PlotHeights.Count == 1)
      return [PlotHeights[0]];

    float[] positions = new float[PlotHeights.Count - 1]; // <=

    positions[0] = PlotHeights[0];
    for (int i = 1; i < positions.Length; i++)
    {
      positions[i] = positions[i - 1] + PlotHeights[i];
    }

    return positions;
  }

  ....
}