https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110900
--- Comment #1 from danakj at orodu dot net --- I am going to try work around this by not using std::string in constant expressions.. So in the meantime I pushed a branch where this bug will continue to reproduce. With gcc-13: git clone --recurse-submodules https://github.com/danakj/subspace cd subspace git checkout test origin/libstd-bug-sso CXX=path/to/gcc-13 cmake -B out -DSUBSPACE_BUILD_TESTS=ON cmake --build out -j 20