https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112373
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed| |2023-11-03 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- The struct is: struct cset_converter { convert_f func; iconv_t cd; int width; const char* from; const char* to; }; So it's not too expensive to copy, but const cset_converter& would indeed be cheaper.