Any invocation of clang-22 outputs a warning: clang-22: warning: future releases of the clang compiler will prefer GCC installations containing libstdc++ include directories; '/usr/lib/gcc/x86_64-linux-gnu/15' would be chosen over '/usr/lib/gcc/x86_64-linux-gnu/16' [-Wgcc-install-dir-libstdcxx] and with -Werror, this makes clang-22 always fail: clang-22: error: future releases of the clang compiler will prefer GCC installations containing libstdc++ include directories; '/usr/lib/gcc/x86_64-linux-gnu/15' would be chosen over '/usr/lib/gcc/x86_64-linux-gnu/16' [-Werror,-Wgcc-install-dir-libstdcxx]