local v=require("constant_pointers")

local myb = v.B()
assert(myb ~= nil)
local bret = v.bar(myb)
assert(bret ~= nil)
local bret2 = v.cbar(myb)
assert(bret2 ~= nil)
local bret3 = v.bar(bret2)
assert(bret3 ~= nil)