https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113208
--- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #18) > Created attachment 57805 [details] > t1.cc ~/upstream-gcc-match/bin/g++ -flto t1.cc t2.cc -O1 -std=c++20 I attached the reduced testcase from the reduced testcase; 3 files including one header which is common between the 2 except for the constexpr. I will redo the reduction to make sure it is valid.