runtimeFunc string
}

var hooks = map[string]hookInfo{
	"strings.EqualFold": {paramType: types.TSTRING, argsNum: 2, runtimeFunc: "libfuzzerHookEqualFold"},
}

// walkCall walks an OCALLFUNC or OCALLINTER node.
func walkCall(n *ir.CallExpr, init *ir.Nodes) ir.Node {
	if n.Op() == ir.OCALLMETH {
		base.FatalfAt(n.Pos(), "OCALLMETH missed by typecheck")
	}
	if n.Op() == ir.OCALLINTER || n.Fun.Op() == ir.OMETHEXPR {