*** Bug 2345176 has been marked as a duplicate of this bug. ***

Sergio, I think this actually may be to do with opencv.

The first test failure is this:

2: Can't call method "search" on an undefined value at t/01-test_needle.t line 66.

If you look at 01-test_needle.t , that boils down to just this:

$img1 = tinycv::read($data_dir . 'bootmenu.test.png');
$res = $img1->search($needle);

It's $img1 that is an "undefined value". Which means the tinycv::read failed somehow.

tinycv is an os-autoinst-specific wrapper around opencv - its source is at https://github.com/os-autoinst/os-autoinst/tree/master/ppmclibs . I'm no great expert on C, but I *guess* we're dealing with this code (I don't actually know how tinycv::read winds up here exactly, but let's pass over that!):

Image* image_read(const char* filename)
{
    Image* image = new Image;
    image->img = imread(filename, cv::IMREAD_COLOR);
    if (!image->img.data) {
        std::cerr << "Could not open image " << filename << std::endl;
        delete image;
        return nullptr;
    }
    return image;
}

I'll see if I can figure out anything more about this...

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OK, yeah, it's an opencv bug. opencv 4.11.0 is broken on s390x. Here's a test program (as I said, not a C++ coder, apologies for any weirdness):

#include <opencv2/imgcodecs.hpp>
#include <opencv2/core/mat.hpp>
#include <iostream>

int main() {
    cv::Mat img;
    img = cv::imread("/var/tmp/bootmenu.test.png", cv::IMREAD_COLOR);
    if (!img.data) {
        std::cout << "Failed\n";
    }
    else {
        std::cout << "Succeeded\n";
    }
}

Compile command:

g++ -I /usr/include/opencv4 -o cvtest cvtest.cpp /usr/lib64/libopencv_imgcodecs.so.4.11.0 /usr/lib64/libopencv_core.so.4.11.0

Obviously adjust library version as appropriate (4.11.0 for F42/Rawhide, 4.10.0 for F41). I tested by setting up a clean mock chroot with opencv-devel and gcc-c++ in it, copying in /var/tmp/bootmenu.test.png , compiling and running the program. On x86_64, we get "Succeeded" on both F41 (opencv 4.10.0) and Rawhide (opencv 4.11.0). On s390x, we get "Succeeded" on F41 (4.10.0) but "Failed" on Rawhide (4.11.0).

Will open a new bug, mark this as depending on that, and report upstream.

OK, I went ahead and did a build with the s390x tests disabled, so at least os-autoinst is installable now. If we can fix opencv without changing the ABI, this build should then work fine on s390x too (if anyone ever actually wanted to use os-autoinst on s390x...)

https://bodhi.fedoraproject.org/updates/FEDORA-2025-66fb73782f