Created attachment 260311 [details]
Example project with failure

The tagfile generated by Doxygen has broken XML if you document a struct in a module group and set either one of or both of the options INLINE_GROUPED_CLASSES and INLINE_SIMPLE_STRUCTS to YES.

It looks as though the <compound kind="struct"> elements are not output correctly -- information about their members seems to be missing and the closing tags are missing.

In the attached project, both options are set to YES, and this gives the following output:
...
  <compound kind="group">
    <name>some_group</name>
...
  <compound kind="struct">
    <name>struct1</name>
    <filename>group__some__group.html</filename>
    <anchor>structstruct1</anchor>
  <compound kind="struct">
    <name>struct2</name>
    <filename>group__some__group.html</filename>
    <anchor>structstruct2</anchor>
  <compound kind="struct">
    <name>struct3</name>
    <filename>group__some__group.html</filename>
    <anchor>structstruct3</anchor>
  <compound kind="struct">
    <name>struct4</name>
    <filename>group__some__group.html</filename>
    <anchor>structstruct4</anchor>
<!-- What kind does the following tag close? -->
  </compound>
  <compound kind="page">
    <name>index</name>
    <title></title>
    <filename>index</filename>
    <docanchor file="index" title="Introduction">intro</docanchor>
  </compound>
</tagfile>


For comparison, if both configs are set to NO, the XML for a struct looks like:
  <compound kind="struct">
    <name>struct2</name>
    <filename>structstruct2.html</filename>
    <member kind="variable">
      <type>int *</type>
      <name>member4</name>
      <anchorfile>structstruct2.html</anchorfile>
      <anchor>a572a6b2ef8ce6d8c5386d51a14784026</anchor>
      <arglist></arglist>
    </member>
    <member kind="variable">
      <type>char *</type>
      <name>member5</name>
      <anchorfile>structstruct2.html</anchorfile>
      <anchor>a84a4fcc0ce38c81894a5015cc7d5bd20</anchor>
      <arglist></arglist>
    </member>
  </compound>