PdfReader.Open throws 'object with ID X 0 resolved with negative position' on newer PDF versions

[jafar1990]

Hi,

I'm encountering an issue when trying to merge certain PDFs using PdfSharpCore v1.3.65.

Problem:

When I attempt to open specific newer PDF files with:

PdfReader.Open("sample.pdf", PdfDocumentOpenMode.Import);

I get the following error: object with ID 8 0 resolved with negative position. This issue only occurs with some newer PDF files, not with older ones.

Sample Code:

using PdfSharpCore.Pdf;
using PdfSharpCore.Pdf.IO;

var inputDocument = PdfReader.Open("sample.pdf", PdfDocumentOpenMode.Import);

Error Details

Error Message: object with ID 8 0 resolved with negative position

PdfSharpCore Version: 1.3.65

.NET Version: .NET 8

OS: Windows

What Works

The same code works for older PDFs.

What Fails

Fails for some newer PDFs, possibly due to unsupported PDF version or structure.

Thanks in advance!