// the runtime manually, though any memory obtained from freed arenas must
// not be accessed once that happens. An Arena is automatically freed once
// it is no longer referenced, so it must be kept alive (see runtime.KeepAlive)
// until any memory allocated from it is no longer needed.
//
// An Arena must never be used concurrently by multiple goroutines.
type Arena struct {
	a unsafe.Pointer
}

// NewArena allocates a new arena.

		// ReadSlice, and it's that function that handles
		// the last byte.
	}

	// Try all readers with UnreadByte.
	for rno, read := range readers {
		// Some input data that is longer than the minimum reader buffer size.
		const n = 10
		var buf bytes.Buffer
		for i := 0; i < n; i++ {
			buf.WriteString("abcdefg")
		}

		r := NewReaderSize(&buf, minReadBufferSize)

As of Go 1.23 (`winsymlink=1`), mount points no longer have [`os.ModeSymlink`](/pkg/os#ModeSymlink)
set, and reparse points that are not symlinks, Unix sockets, or dedup files now
always have [`os.ModeIrregular`](/pkg/os#ModeIrregular) set. As a result of these changes,
[`filepath.EvalSymlinks`](/pkg/path/filepath#EvalSymlinks) no longer evaluates
mount points, which was a source of many inconsistencies and bugs.

pkg io/fs, var ErrClosed error
pkg io/fs, var ErrExist error
pkg io/fs, var ErrInvalid error
pkg io/fs, var ErrNotExist error
pkg io/fs, var ErrPermission error
pkg io/fs, var SkipDir error
pkg log, func Default() *Logger
pkg net, var ErrClosed error
pkg net/http, func FS(fs.FS) FileSystem
pkg net/http, type Transport struct, GetProxyConnectHeader func(context.Context, *url.URL, string) (Header, error)
pkg os, const ModeAppend fs.FileMode

pkg log/syslog (freebsd-arm64), func Dial(string, string, Priority, string) (*Writer, error)
pkg log/syslog (freebsd-arm64), func New(Priority, string) (*Writer, error)
pkg log/syslog (freebsd-arm64), func NewLogger(Priority, int) (*log.Logger, error)
pkg log/syslog (freebsd-arm64), method (*Writer) Alert(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Close() error
pkg log/syslog (freebsd-arm64), method (*Writer) Crit(string) error

// yet hold a complete token, for instance if it has no newline while
// scanning lines, a [SplitFunc] can return (0, nil, nil) to signal the
// [Scanner] to read more data into the slice and try again with a
// longer slice starting at the same point in the input.
//
// The function is never called with an empty data slice unless atEOF
// is true. If atEOF is true, however, data may be non-empty and,
// as always, holds unprocessed text.

	baseOffset int64

	// fileList is a list of files sorted by ename,
	// for use by the Open method.
	fileListOnce sync.Once
	fileList     []fileListEntry
}

// A ReadCloser is a [Reader] that must be closed when no longer needed.
type ReadCloser struct {
	f *os.File
	Reader
}

// A File is a single file in a ZIP archive.
// The file information is in the embedded [FileHeader].

pkg log/syslog (freebsd-riscv64), func New(Priority, string) (*Writer, error) #53466
pkg log/syslog (freebsd-riscv64), func NewLogger(Priority, int) (*log.Logger, error) #53466
pkg log/syslog (freebsd-riscv64), method (*Writer) Alert(string) error #53466
pkg log/syslog (freebsd-riscv64), method (*Writer) Close() error #53466

### Timer changes

Go 1.23 makes two significant changes to the implementation of
[time.Timer] and [time.Ticker].

First, `Timer`s and `Ticker`s that are no longer referred to by the program
become eligible for garbage collection immediately, even if their
`Stop` methods have not been called.
Earlier versions of Go did not collect unstopped `Timer`s until after
they had fired and never collected unstopped `Ticker`s.

</li>
</ul>

<h4 id="Go_1.17">Go 1.17</h4>
<ul>
<li>
A slice may be <a href="#Conversions">converted</a> to an array pointer if the slice and array element
types match, and the array is not longer than the slice.
</li>
<li>
The built-in <a href="#Package_unsafe">package <code>unsafe</code></a> includes the new functions
<code>Add</code> and <code>Slice</code>.
</li>
</ul>