m.css crashes with AttributeError on Doxygen v1.9.1

[marcizhu]

For some reason, when using doxygen v1.9.X the script m.css/documentation/doxygen.py crashes with the following traceback:

Traceback (most recent call last):
  File "m.css/documentation/doxygen.py", line 3859, in <module>
    run(state, templates=os.path.abspath(args.templates), wildcard=args.wildcard, index_pages=args.index_pages, search_merge_subtrees=not args.search_no_subtree_merging, search_add_lookahead_barriers=not args.search_no_lookahead_barriers, search_merge_prefixes=not args.search_no_prefix_merging)
  File "m.css/documentation/doxygen.py", line 3716, in run
    parsed = parse_xml(state, file)
  File "m.css/documentation/doxygen.py", line 2988, in parse_xml
    func = parse_func(state, memberdef)
  File "m.css/documentation/doxygen.py", line 1965, in parse_func
    if signature.endswith('=default'):
AttributeError: 'NoneType' object has no attribute 'endswith'

As far as I know, this didn't happen with previous versions of Doxygen. I'm using m.css' latest commit (42d4a9a).

[crisluengo]

This issue is fixed here:
#189

[marcizhu]

@crisluengo I have tested your PR and I can confirm that the changes proposed on #189 do indeed fix this issue.
@mosra Can we get that PR merged?

[marzer]

*bump*

@mosra I've just hit this bug too :(

[GiulioRomualdi]

I had the same problem

[marcizhu]

@mosra Will this ever get fixed? It's been over four months already.

[mosra]

Sorry sorry extremely sorry, I'm on this now. Finally was able to drag through the bug swamp that piled up over the past two years and now onto the final boss, Doxygen 1.9.

Or actually, it can wait one more day, right? Need some sleep.

[mosra]

#189 is merged as c7ee89e, so things should no longer blow up. Until another Doxygen release, at least.

[mosra]

FYI for whoever is subscribed to this issue: #215 tracks remaining issues for proper Doxygen 1.9 support. Some of them are rather nasty (like the inline namespace regression), so until these boxes are all ticked off I don't recommend updating.