Identify Clients#3
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Pointer31
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May 10, 2026
On archlinux by default sdl2 is replaced by sdl2-compat which uses sdl3 under the hood. And a recent update of it caused a segfault during launch of the headless client for me. ``` $ uname -a Linux archlinux 6.18.9-arch1-2 #1 SMP PREEMPT_DYNAMIC Mon, 09 Feb 2026 17:16:33 +0000 x86_64 GNU/Linux $ pacman -Q | grep sdl qemu-audio-sdl 10.2.0-3 qemu-ui-sdl 10.2.0-3 sdl12-compat 1.2.68-2 sdl2-compat 2.32.64-1 sdl2_image 2.8.8-1 sdl3 3.4.0-4 ``` ``` cmake .. -DCMAKE_BUILD_TYPE=Debug -DHEALDESS_CLIENT=ON make gdb ./DDNet ``` causes this segfault directly on start: ``` 2026-02-19 10:52:00 I sound: sound init successful using audio driver 'pipewire' 2026-02-19 10:52:00 I textrender: Freetype version 2.14.1 (compiled = 2.14.1) Thread 1 "DDNet" received signal SIGSEGV, Segmentation fault. 0x00007fffe214bf6b in ?? () from /usr/lib/libSDL3.so.0 (gdb) bt #0 0x00007fffe214bf6b in ??? () at /usr/lib/libSDL3.so.0 #1 0x00007ffff7d72e7b in ??? () at /usr/lib/libSDL2-2.0.so.0 #2 0x00007ffff7d72f46 in ??? () at /usr/lib/libSDL2-2.0.so.0 #3 0x0000555555955ea8 in CGraphicsBackend_SDL_GL::SetWindowGrab (this=0x555556212bd0, Grab=true) at /home/chiller/Desktop/git/ddnet/src/engine/client/backend_sdl.cpp:1718 #4 0x00005555559a0676 in CGraphics_Threaded::SetWindowGrab (this=0x7fffb4e99010, Grab=true) at /home/chiller/Desktop/git/ddnet/src/engine/client/graphics_threaded.cpp:2746 #5 0x00005555559b7d23 in CInput::MouseModeRelative (this=0x5555560c23b0) at /home/chiller/Desktop/git/ddnet/src/engine/client/input.cpp:296 #6 0x00005555559b7090 in CInput::Init (this=0x5555560c23b0) at /home/chiller/Desktop/git/ddnet/src/engine/client/input.cpp:100 #7 0x0000555555969fc4 in CClient::Run (this=0x7fffe15da010) at /home/chiller/Desktop/git/ddnet/src/engine/client/client.cpp:3130 #8 0x0000555555973aa5 in main (argc=1, argv=0x7fffffffccd8) at /home/chiller/Desktop/git/ddnet/src/engine/client/client.cpp:5002 ```
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