ListClipper doesn't work with big lists

[snhmibby]

See also: AllenDang/giu#354

Version/Branch of Dear ImGui:
Version: 1.84.2

Back-end/Renderer/Compiler/OS
Back-ends: through giu library (imgui-go wrapper library)
Compiler: gcc
Operating System: linux

My Issue/Question:
I am trying to display a large hexdump of a several GB file.
I wanted to use ListClipper because it makes a nice scrollbar and I don't know how to make a scrollbar :)

However, when the amount of items in the list is very large (about 10**8 items or more), ListClipper behaves weird, due to what i assume are floating point errors (the last X items do not get displayed) and bugs (if the value is large enough and you scroll down, an assertion gets failed

listclippertest: imgui.cpp:2407: bool ImGuiListClipper::Step(): Assertion `ItemsHeight > 0.0f && "Unable to calculate item height! First item hasn't moved the cursor vertically!"' failed.
SIGABRT: abort

Here is example code to reproduce the problem

        {
                ImGui::Begin("window with clipped list");

                ImGuiListClipper clipper;
                clipper.Begin(pow(10, 8));
                while (clipper.Step()) {
                        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++) {
                                std::string tmp = std::to_string(i);
                                char const *num_char = tmp.c_str();
                                ImGui::Text(num_char);
                        }
                }
                clipper.End();

                ImGui::End();
        }

[snhmibby]

I am sorry, the issue doesn't seem to be with ListClipper, but rather that textlineheight * number_of_lines would be bigger than INT_MAX, which i guess means there aren't enough logical pixels for this approach.

[snhmibby]

I just found #3609.
Good to know the inspiration for my pet project had the same issue ^^