[iOS] Crash on startup.

[vng]

Crash dump:

Thread 22 Crashed:
0   libsystem_platform.dylib      	       0x1edce2af0 _platform_memmove + 144
1   Organic Maps                  	       0x100e7e7b0 0x100b88000 + 3106736
2   Organic Maps                  	       0x100eb64d0 0x100b88000 + 3335376
3   Organic Maps                  	       0x100eb5b50 0x100b88000 + 3332944
4   Organic Maps                  	       0x100eb593c 0x100b88000 + 3332412
5   Organic Maps                  	       0x100eb6214 0x100b88000 + 3334676
6   Organic Maps                  	       0x100f4b1f4 0x100b88000 + 3944948
7   Organic Maps                  	       0x100f3c100 0x100b88000 + 3883264
8   Organic Maps                  	       0x100e92700 0x100b88000 + 3188480
9   Organic Maps                  	       0x100f4fa98 0x100b88000 + 3963544
10  Organic Maps                  	       0x100e0b0f0 0x100b88000 + 2633968
11  libsystem_pthread.dylib       	       0x1edd99a90 _pthread_start + 136
12  libsystem_pthread.dylib       	       0x1edd98fcc thread_start + 8

I've decoded it with https://github.com/organicmaps/organicmaps/actions/runs/8952369390

dp::VertexArrayBuffer::ApplyMutation(ref_ptr<dp::GraphicsContext>, ref_ptr<dp::IndexBufferMutator>, ref_ptr<dp::AttributeBufferMutator>) (in Organic Maps) (vertex_array_buffer.cpp:398)
std::__1::__function::__func<gui::ShapeRenderer::Render(ref_ptr<dp::GraphicsContext>, ref_ptr<gpu::ProgramManager>, ScreenBase const&)::$_2, std::__1::allocator<gui::ShapeRenderer::Render(ref_ptr<dp::GraphicsContext>, ref_ptr<gpu::ProgramManager>, ScreenBase const&)::$_2>, void (gui::ShapeControl::ShapeInfo&)>::operator()(gui::ShapeControl::ShapeInfo&) (in Organic Maps) (function.h:364)
std::__1::__function::__func<gui::ShapeRenderer::ForEachShapeInfo(std::__1::function<void (gui::ShapeControl::ShapeInfo&)> const&)::$_3, std::__1::allocator<gui::ShapeRenderer::ForEachShapeInfo(std::__1::function<void (gui::ShapeControl::ShapeInfo&)> const&)::$_3>, void (gui::ShapeControl&)>::operator()(gui::ShapeControl&) (in Organic Maps) (function.h:364)
gui::ShapeRenderer::ForEachShapeControl(std::__1::function<void (gui::ShapeControl&)> const&) (in Organic Maps) (shape.cpp:149)
gui::ShapeRenderer::Render(ref_ptr<dp::GraphicsContext>, ref_ptr<gpu::ProgramManager>, ScreenBase const&) (in Organic Maps) (shape.cpp:99)
df::FrontendRenderer::RenderScene(ScreenBase const&, bool) (in Organic Maps) (frontend_renderer.cpp:1524)
df::FrontendRenderer::RenderFrame() (in Organic Maps) (frontend_renderer.cpp:1767)

I suspect, it is connected with drawing still not ready glyphs in GUI (diagnostic FPS was turned-on by user) at this point:
shape.cpp, line 120:

    if (info.m_handle->HasDynamicAttributes())
    {
      dp::AttributeBufferMutator mutator;
      ref_ptr<dp::AttributeBufferMutator> mutatorRef = make_ref(&mutator);
      info.m_handle->GetAttributeMutation(mutatorRef);
      info.m_buffer->ApplyMutation(context, nullptr, mutatorRef);
    }

[biodranik]

Glyphs are now ready immediately, without waiting for them to be generated later on other threads.

[biodranik]

This one can be related #8108

[vng]

I've also noticed rare black-line artifacts on my desktop. And also in time after some drape refactorings were merged.

[vng]

Ok, one more idea to reproduce - Compass Shape. Start the app when previously was closed in Follow-and-Rotate mode.

[biodranik]

This issue is reproducible in simulator with memory debugging enabled:

[rtsisyk]

Do we know what PR has caused this regression?

[biodranik]

Yes, the PR which was done 10+ years ago to print debug label at the top left of the screen.