[Bug 2278602] New: perl-Gtk3-0.038-11.fc41 FTBFS: t/overrides.t fails: loader: Image type “xpm” is not supported

https://bugzilla.redhat.com/show_bug.cgi?id=2278602

Bug ID: 2278602
           Summary: perl-Gtk3-0.038-11.fc41 FTBFS: t/overrides.t fails:
                    loader: Image type “xpm” is not supported
           Product: Fedora
           Version: rawhide
               URL: https://koschei.fedoraproject.org/package/perl-Gtk3
            Status: NEW
         Component: perl-Gtk3
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail], [e-mail]
            Blocks: 2260875 (F41FTBFS,RAWHIDEFTBFS)
  Target Milestone: ---
    Classification: Fedora

perl-Gtk3-0.038-11.fc41 fails to build in Fedora 41 because a test fails:

(overrides.t:692): GdkPixbuf-WARNING **: 08:33:21.912: Error loading XPM image
loader: Image type “xpm” is not supported
#   Failed test 'undef isa 'Gtk3::Gdk::Pixbuf''
#   at t/overrides.t line 748.
#     undef isn't defined
Can't call method "get_colorspace" on an undefined value at t/overrides.t line
749.
# Looks like your test exited with 25 just after 179.
t/overrides.t .................. 
Dubious, test returned 25 (wstat 6400, 0x1900)
Failed 55/233 subtests

A difference between passing and failing build roots is at
https://koschei.fedoraproject.org/build/17799353.

This failure is probably triggered by upgrading gdk-pixbuf2-modules from
2.42.10-8.fc40 to 2.42.11-1.fc41. gdk-pixbuf2 disabled a support for XPM format
(bug #2276464).

Reading a code of t/overrides.t reveals it tests loading XPM without checking
whether gkd-pixbuf supports XPM.

Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=2260875
[Bug 2260875] Fedora 41 FTBFS Tracker