pkg go/types, method (*Label) Pos() token.Pos
pkg go/types, method (*Label) String() string
pkg go/types, method (*Label) Type() Type
pkg go/types, method (*Map) Elem() Type
pkg go/types, method (*Map) Key() Type
pkg go/types, method (*Map) String() string
pkg go/types, method (*Map) Underlying() Type
pkg go/types, method (*MethodSet) At(int) *Selection
pkg go/types, method (*MethodSet) Len() int

pkg syscall (windows-386), const KEY_ALL_ACCESS ideal-int
pkg syscall (windows-386), const KEY_CREATE_LINK ideal-int
pkg syscall (windows-386), const KEY_CREATE_SUB_KEY ideal-int
pkg syscall (windows-386), const KEY_ENUMERATE_SUB_KEYS ideal-int
pkg syscall (windows-386), const KEY_EXECUTE ideal-int
pkg syscall (windows-386), const KEY_NOTIFY ideal-int
pkg syscall (windows-386), const KEY_QUERY_VALUE ideal-int

pkg runtime/debug, type BuildInfo struct, GoVersion string
pkg runtime/debug, type BuildInfo struct, Settings []BuildSetting
pkg runtime/debug, type BuildSetting struct
pkg runtime/debug, type BuildSetting struct, Key string
pkg runtime/debug, type BuildSetting struct, Value string
pkg strings, func Clone(string) string
pkg strings, func Cut(string, string) (string, string, bool)
pkg strings, func Title //deprecated

because it documents the full list of known GODEBUG settings,
which are tied to a specific release.
-->

## Introduction {#intro}

Go's emphasis on backwards compatibility is one of its key strengths.
There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:

pkg syscall (windows-386), const KEY_ALL_ACCESS = 983103
pkg syscall (windows-386), const KEY_CREATE_LINK = 32
pkg syscall (windows-386), const KEY_CREATE_SUB_KEY = 4
pkg syscall (windows-386), const KEY_ENUMERATE_SUB_KEYS = 8
pkg syscall (windows-386), const KEY_EXECUTE = 131097
pkg syscall (windows-386), const KEY_NOTIFY = 16
pkg syscall (windows-386), const KEY_QUERY_VALUE = 1

pkg os, func UserHomeDir() (string, error)
pkg os, method (*File) SyscallConn() (syscall.RawConn, error)
pkg os, method (*ProcessState) ExitCode() int
pkg os/exec, method (ExitError) ExitCode() int
pkg reflect, method (*MapIter) Key() Value
pkg reflect, method (*MapIter) Next() bool
pkg reflect, method (*MapIter) Value() Value
pkg reflect, method (Value) MapRange() *MapIter
pkg reflect, type MapIter struct

The new [ParseCookie] function parses a Cookie header value and
returns all the cookies which were set in it. Since the same cookie
name can appear multiple times the returned Values can contain
more than one value for a given key.

The new [ParseSetCookie] function parses a Set-Cookie header value and

pkg syscall (linux-arm-cgo), const AF_IRDA ideal-int
pkg syscall (linux-arm-cgo), const AF_ISDN ideal-int
pkg syscall (linux-arm-cgo), const AF_IUCV ideal-int
pkg syscall (linux-arm-cgo), const AF_KEY ideal-int
pkg syscall (linux-arm-cgo), const AF_LLC ideal-int
pkg syscall (linux-arm-cgo), const AF_LOCAL ideal-int
pkg syscall (linux-arm-cgo), const AF_MAX ideal-int

pkg log/slog, method (Value) String() string #56345
pkg log/slog, method (Value) Time() time.Time #56345
pkg log/slog, method (Value) Uint64() uint64 #56345
pkg log/slog, type Attr struct #56345
pkg log/slog, type Attr struct, Key string #56345
pkg log/slog, type Attr struct, Value Value #56345
pkg log/slog, type Handler interface, Enabled(context.Context, Level) bool #56345
pkg log/slog, type Handler interface { Enabled, Handle, WithAttrs, WithGroup } #56345