"ERROR: idRenderWorld::RenderScene: bad FOVs: 90.000000, -nan" when compiled with Clang 22.1.8 on Linux x86_64

[Bijman]

I tried to run game after compiling it with Clang 22.1.8 on Linux x86_64, but it throws this error: "ERROR: idRenderWorld::RenderScene: bad FOVs: 90.000000, -nan" and can't continue to main menu. This does not happen with GCC.

Log:
qconsolelog.txt

[m0rb]

Hi again!

I can only assume there's something funky with your environment / compiler flags when you built. Are you building things with CXXFLAGS="-Ofast" or -ffast-math by default?

[Bijman]

No, I don't use any extra compiler flags for this. I just generate Makefile with script ./cmake_linux.sh clang release or ./cmake_linux.sh clang reldeb and then enter cmake --build build/ninja -j20. Also, I tried to isolate with clean bash environment with env --ignore-environment /bin/bash to make sure that environment variables doesn't mess with compilation, but I get the same runtime issue. I use Gentoo Linux BTW.

[m0rb]

Just issued a PR regarding this; turns out there was an old compiler flag that turned out to be problematic (-ffinite-math-only and NaNs don't mix)

CMakeLists.txt should be updated now. Let me know if any further complications arise.