x := base.Ctxt.LookupInit(fmt.Sprintf("%s.wrapinfo", wsym.Name), func(x *obj.LSym) {
		objw.SymPtrOff(x, 0, wsym)
		x.Set(obj.AttrContentAddressable, true)
	})
	e.curfn.LSym.Func().WrapInfo = x

	// Emit a funcdata pointing at the wrap info data.
	p := pp.Prog(obj.AFUNCDATA)
	p.From.SetConst(rtabi.FUNCDATA_WrapInfo)
	p.To.Type = obj.TYPE_MEM
	p.To.Name = obj.NAME_EXTERN
	p.To.Sym = x
}

Arguments      = "(" [ ( ExpressionList | Type [ "," ExpressionList ] ) [ "..." ] [ "," ] ] ")" .
</pre>


<pre>
x
2
(s + ".txt")
f(3.1415, true)
Point{1, 2}
m["foo"]
s[i : j + 1]
obj.color
f.p[i].x()
</pre>


<h3 id="Selectors">Selectors</h3>

<p>
For a <a href="#Primary_expressions">primary expression</a> <code>x</code>