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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - FILEOPEN: Cannot open XML (Excel) with style parent ref."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=126515">126515</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>FILEOPEN: Cannot open XML (Excel) with style parent ref.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>LibreOffice
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>6.3.0.2 rc
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Calc
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>libreoffice-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>info@scito.ch
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=152954" name="attach_152954" title="Original file from ark.intel.com">attachment 152954</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=152954&action=edit" title="Original file from ark.intel.com">[details]</a></span>
Original file from ark.intel.com

It is not possible to open an XML (Excel) file having a Style tag with Parent
attribute. The error message "General Error. General input/output Error." is
shown while opening the file in LibreOffice Calc.

My file was generated by ark.intel.com about processor information:
<a href="https://ark.intel.com/content/www/us/en/ark/products/75460/intel-core-i7-4500u-processor-4m-cache-up-to-3-00-ghz.html">https://ark.intel.com/content/www/us/en/ark/products/75460/intel-core-i7-4500u-processor-4m-cache-up-to-3-00-ghz.html</a>
I exported the file by clicking the "Export specifications" link.

After removing
<ss:Style ss:ID="s22link" ss:Parent="s22"><ss:Font ss:Color="Blue"
/></ss:Style>
I could open the file.

Steps to reproduce:
1. Open Intel_ARK_ComparisonChart_2019_07_23_original.xml in LO Calc
--> "General Error. General input/output Error."
2. Open Intel_ARK_ComparisonChart_2019_07_23_modified.xml where the offending
Style tag was removed
--> File is opened

Actual Result:
An error message is shown and the original file cannot be opened.

Expected result:
The original file opens without error in LO Calc.

Versions
I tested it on LO 6.2.5.2 Linux and LO 6.3.0.2 Windows.

File type of XML (Excel) file:
<?xml version="1.0"?><?mso-application progid="Excel.Sheet"?><ss:Workbook
xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">

I do not know if this Style tag having a Parent attribute is valid or not for
the above file type.</pre>
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