discard """
  output: '''0
5
0
5
@[1, 2]
~'''
"""

# bug #2476

type A = ref object
    m: int

proc f(a: var A) =
    var b: A
    b.new()
    b.m = 5
    a = b

var t: A
t.new()

echo t.m
t.f()
echo t.m

proc main =
  # now test the same for locals
  var t: A
  t.new()

  echo t.m
  t.f()
  echo t.m

main()

# bug #5974
type
  View* = object
    data: ref seq[int]

let a = View(data: new(seq[int]))
a.data[] = @[1, 2]

echo a.data[]

# bug #5379
var input = newSeq[ref string]()
input.add(nil)
input.add(new string)
input[1][] = "~"
echo input[1][]

# bug #5517
type
  TypeA1 = object of RootObj
    a_impl: int
    b_impl: string
    c_impl: pointer

proc initTypeA1(a: int; b: string; c: pointer = nil): TypeA1 =
  result.a_impl = a
  result.b_impl = b
  result.c_impl = c

let x = initTypeA1(1, "a")
doAssert($x == "(a_impl: 1, b_impl: \"a\", c_impl: ...)")