// and that the data is correct.

			w.Reset()
			buf := NewWriterSize(w, bs)
			context := fmt.Sprintf("nwrite=%d bufsize=%d", nwrite, bs)
			n, e1 := buf.Write(data[0:nwrite])
			if e1 != nil || n != nwrite {
				t.Errorf("%s: buf.Write %d = %d, %v", context, nwrite, n, e1)
				continue
			}
			if e := buf.Flush(); e != nil {
				t.Errorf("%s: buf.Flush = %v", context, e)
			}

			written := w.Bytes()

		"../foo",
		"/foo",
		"a/b/../../../c",
		`a\b`,
	} {
		var buf bytes.Buffer
		zw := NewWriter(&buf)
		_, err := zw.Create(path)
		if err != nil {
			t.Errorf("zw.Create(%q) = %v", path, err)
			continue
		}
		zw.Close()

		zr, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
		if err != ErrInsecurePath {

			if j != n-7 {
				b.Fatal("bad index", j)
			}
		}
		buf[n-1] = '\x00'
		buf[n-7] = '\x00'
	})
}

func BenchmarkCount(b *testing.B) {
	benchBytes(b, indexSizes, func(b *testing.B, n int) {
		buf := bmbuf[0:n]
		buf[n-1] = 'x'
		for i := 0; i < b.N; i++ {
			j := Count(buf, buf[n-7:])
			if j != 1 {
				b.Fatal("bad count", j)
			}
		}
		buf[n-1] = '\x00'
	})

			ident[name] = name
		}
		fld[n] = &ast.Field{Names: []*ast.Ident{c.Ident(ident[name])}, Type: tgo}
		sizes = sizes[0 : n+1]
		sizes[n] = size
		off += size
		buf.WriteString(t.C.String())
		buf.WriteString(" ")
		buf.WriteString(name)
		buf.WriteString("; ")
		if talign > align {
			align = talign
		}
	}
	if off < dt.ByteSize {
		fld, sizes = c.pad(fld, sizes, dt.ByteSize-off)