https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118390
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- There is still pr118390.ii: In function ‘int main()’: pr118390.ii:13604:67: error: too many initializers for ‘char [4]’ 13604 | static constexpr auto std_to_char_array = std::to_array<char>({ | ~~~~~~~~~~~~~~~~~~~^~ 13605 | #embed __FILE__ | ~~~~~~~~~~~~~~~ 13606 | , '\0' | ~~~~~~ 13607 | }); | ~~ error with all the 3 patches, the first one in PR118124 makes the second error go away.