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  1. MariaDB Server
  2. MDEV-40394

XML schema fails on self-referencing type.

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Fixed
    • N/A
    • 13.2.1
    • XML Functions
    • None
    • Can result in hang or crash
    • Q3/2026 Server Maintenance, Q3/2026 Server Development, Q4/2026 Server Maintenance

    Description

      SELECT XMLISVALID('<root><child/></root>',
      		 
        '<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
      		 
           <xs:complexType name="T">
      		 
             <xs:sequence><xs:element name="child" type="T"/></xs:sequence>
      		 
           </xs:complexType>
      		 
           <xs:element name="root" type="T"/></xs:schema>');

      crashes the server.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-41594 XMLISVALID crahes with XML sequence maxOccurs>1 loops over its elements

          • Major - Major loss of function.
          • Open
          is caused by

          New Feature - A new feature of the product, which has yet to be developed. MDEV-37262 XMLISVALID() schema validation function

          • Critical - Crashes, loss of data, severe memory leak.
          • Stalled

          Activity

            People

              holyfoot Alexey Botchkov
              holyfoot Alexey Botchkov
              Alexander Barkov Alexander Barkov
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              Dates

                Created:
                Updated:
                Resolved:

                Time Tracking

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                  Original Estimate - 1d 19m Original Estimate - 1d 19m
                  1d 19m
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                  8.5d

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