https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91044
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- You get an error because that's not valid C++. I don't know what you think those calls to getline are supposed to do, but there is no matching function in the C++ standard library. https://en.cppreference.com/w/cpp/string/basic_string/getline