<magic priority="50">
      <!-- MM.* = Big endian (M=Motorola) and 0x002a in big endian    -->
      <match value="MM\x00\x2a" type="string" offset="0"/>
      <!-- II*. = Little endian (I=Intel) and 0x002a in little endian -->
      <match value="II\x2a\x00" type="string" offset="0"/>
      <!-- MM.+ = Big endian (M=Motorola) and 0x002a in big endian-->
      <match value="MM\x00\x2b" type="string" offset="0"/>
    </magic>

var b = make([]byte, 1.0<<s)   // 1.0 has type int; len(b) == 1<<33

// The results of the following examples are given for 32-bit ints,
// which means the shifts will overflow.
var mm int = 1.0<<s            // 1.0 has type int; mm == 0
var oo = 1<<s == 2<<s          // 1 and 2 have type int; oo == true
var pp = 1<<s == 1<<33         // illegal: 1 has type int, but 1<<33 overflows int