'textDocument/publishDiagnostics' failed with message: Illegal argument: line must be non-negative

[fbricon]

When debugging in vscode, when pasting <?xml version="1.0" encoding="UTF-8"?> into a new empty document, the host vscode instance displays an error:

Notification handler 'textDocument/publishDiagnostics' failed with message: Illegal argument: line must be non-negative

The server sent :

Params: {
    "uri": "file:///Users/fbricon/Dev/xml/foo.xml",
    "diagnostics": [
        {
            "range": {
                "start": {
                    "line": -2,
                    "character": -2
                },
                "end": {
                    "line": -2,
                    "character": -2
                }
            },
            "severity": 1,
            "code": "PrematureEOF",
            "source": "xml",
            "message": "Premature end of file."
        }
    ]
}