https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100057
--- Comment #24 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to cqwrteur from comment #16) > d:\cross_toolchains\x86_64-elf\x86_64-elf\include\c++\11.0.1\bit:37:10: > fatal error: ext/numeric_traits.h: No such file or directory > 37 | #include <ext/numeric_traits.h> > | ^~~~~~~~~~~~~~~~~~~~~~ > compilation terminated. > > #include<bit> > > int main(); > > This is wrong This is a regression, please report a separate bug about this part.