Wolf480pl on Nostr: nprofile1q…52jmd are there valid programs that trigger compiler warnings? Do ...

nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqr8wjyp2urdyxn6g7gsvcjwapyj3aazs8kgnyaqe4d2sau05kn00qy52jmd (nprofile…2jmd) are there valid programs that trigger compiler warnings?

Do compilers promise that valid programs that do not trigger warnings in version N will not start triggering warnings in version N+1?