def foo():
# use some tricks to make ref-counted unicode
i, j = 'ab', 'c'
a = i + j
m, n = 'zy', 'x'
z = m + n
l = List.empty_list(types.unicode_type)
l.append(a)
# This *should* dec' a and inc' z thus tests that items that are
# replaced are also dec'ed.
l[0] = z
ra, rz = get_refcount(a), get_refcount(z)
return l, ra, rz
def foo():
d = Dict.empty(int32, List.empty_list(int32))
l = List.empty_list(int32)
l.append(0)
# This increments the refcount for l
d[0] = l
return get_refcount(l)
def foo():
l = List.empty_list(Dict.empty(int32, int32))
d = Dict.empty(int32, int32)
d[0] = 1
# This increments the refcount for d
l.append(d)
return get_refcount(d)