Gentoo's Bugzilla –
Attachment 888523 Details for
Bug 927797[guru] dev-cpp/fizz-2023.02.06.00 fails to compile: AsyncKTLSSocket.h:148:3: error: folly::AsyncSocket::ReadResult fizz::AsyncKTLSSocket::performRead(void, size_t, size_t) marked override, but does not override