for _, v := range vectors {
			b.Run(v.label, func(b *testing.B) {
				b.ReportAllocs()
				for i := 0; i < b.N; i++ {
					// Writing to io.Discard because we want to
					// test purely the writer code and not bring in disk performance into this.
					tw := NewWriter(io.Discard)
					for _, file := range v.files {
						if err := tw.WriteHeader(file.hdr); err != nil {
							b.Errorf("unexpected WriteHeader error: %v", err)

</p>

<p>
Not allowing a single read to observe multiple values means
not reloading local variables from shared memory.
For example, a compiler must not discard <code>i</code> and reload it
a second time from <code>*p</code> in this program:
</p>

<pre>
i := *p
if i &lt; 0 || i &gt;= len(funcs) {
	panic("invalid function index")
}
... complex code ...

	}, {
		name: "PAX header too long",
		h:    &Header{PAXRecords: map[string]string{"GOLANG.x": strings.Repeat("a", maxSpecialFileSize)}},
	}} {
		w := NewWriter(io.Discard)
		if err := w.WriteHeader(test.h); err != ErrFieldTooLong {
			t.Errorf("%v: w.WriteHeader() = %v, want ErrFieldTooLong", test.name, err)
		}
	}
}

pkg io/ioutil, func ReadFile //deprecated #42026
pkg io/ioutil, func TempDir //deprecated #42026
pkg io/ioutil, func TempFile //deprecated #42026
pkg io/ioutil, func WriteFile //deprecated #42026

pkg syscall (freebsd-386-cgo), const TIOCTIMESTAMP ideal-int
pkg syscall (freebsd-386-cgo), const TIOCUCNTL ideal-int
pkg syscall (freebsd-386-cgo), const TOSTOP ideal-int
pkg syscall (freebsd-386-cgo), const VDISCARD ideal-int
pkg syscall (freebsd-386-cgo), const VDSUSP ideal-int
pkg syscall (freebsd-386-cgo), const VEOF ideal-int
pkg syscall (freebsd-386-cgo), const VEOL ideal-int
pkg syscall (freebsd-386-cgo), const VEOL2 ideal-int