https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96106
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|A friend abbreviated |[10/11 Regression] A friend |template function denies |abbreviated template |access to private members |function denies access to | |private members Known to fail| |10.1.0, 11.0 Known to work| |9.3.0 Last reconfirmed| |2020-07-08 Ever confirmed|0 |1 Status|UNCONFIRMED |NEW --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- This was accepted with -std=gnu++2a -fconcepts until r276764, "Update the concepts implementation to conform to C++20." It's still accepted with -std=gnu++17 -fconcepts now.