https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90767
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 47298 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47298&action=edit gcc10-pr90767.patch Untested fix. Though, that only fixes the ugly ... not supported by dump_expr part, the complain_about_bad_argument call still emits worse diagnostics compared to what print_conversion_rejection can emit.