Fatal error. 0xC0000005

[aropb]

Describe the bug

Fatal error. 0xC0000005 at OpenCvSharp.Internal.NativeMethods.core_mean(IntPtr, IntPtr, OpenCvSharp.Scalar ByRef) at OpenCvSharp.Cv2.Mean(OpenCvSharp.InputArray, OpenCvSharp.InputArray) at OpenCvSharp.Mat.Mean(OpenCvSharp.InputArray) at Sdcb.OpenVINO.PaddleOCR.PaddleOcrDetector.GetScore(OpenCvSharp.Point[], OpenCvSharp.Mat) at Sdcb.OpenVINO.PaddleOCR.PaddleOcrDetector+<>c__DisplayClass35_0.<Run>b__0(OpenCvSharp.Point[]) at System.Linq.Enumerable+ArrayWhereSelectIterator2[[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099]].MoveNext() at System.Linq.Enumerable+IEnumerableWhereSelectIterator2[[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099],[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099]].ToArray() at System.Linq.Enumerable.ToArray[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099] at System.Linq.Enumerable+OrderedIterator1[[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099]].ToArray() at System.Linq.Enumerable.ToArray[[OpenCvSharp.RotatedRect, OpenCvSharp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=6adad1e807fea099]](System.Collections.Generic.IEnumerable1<OpenCvSharp.RotatedRect>) at Sdcb.OpenVINO.PaddleOCR.PaddleOcrDetector.Run(OpenCvSharp.Mat) at Sdcb.OpenVINO.PaddleOCR.PaddleOcrAll.Run(OpenCvSharp.Mat)

in here OpenCvSharp.Cv2

public static Scalar Mean(InputArray src, InputArray? mask = null)
{
    if (src is null)
        throw new ArgumentNullException(nameof(src));
    src.ThrowIfDisposed();

    NativeMethods.HandleException(
        NativeMethods.core_mean(src.CvPtr, ToPtr(mask), out var ret));

    GC.KeepAlive(src);
    GC.KeepAlive(mask);
    return ret;
}

The problem appeared when switching to NET 9.0.1. There were no other changes.

Release version

PaddleOcr 0.6.9 NET 9.0.1 OpenCVSharp4 4.10.0.20241108

IDE

VS Code

OS version

Windows 10

[n0099]

#113

[aropb]

The error disappears for a while after restarting the PC. Then it occurs again during debugging in VS Code.

[maxfurioso]

Same problem here. It's constantly reproducible. It only appears to be an issue with .NET 9. There is no problem when moving back to .NET 8. Any idea?

[maxfurioso]

After downgrading OpenCvSharp4.Windows to version 4.10.0.20240616 the error is gone and everything works with .NET 9 also.