复合文字的地址在用作接口(interface)时被评估为文字本身。有人可以指出refspec的部分吗？哪个处理这个？packagemainimport"fmt"typentfcinterface{rx()int}typecncrtstruct{xint}func(ccncrt)rx()int{returnc.x}funcrtrnsNtfca()ntfc{return&cncrt{3}}funcrtrnsNtfc()ntfc{returncncrt{3}}funcrtrnsCncrt()*cncrt{return&cncrt{3}}funcmain(){fmt.Println(rtrns
