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discard """
cmd: '''nim c -d:nimAllocStats --gc:arc $file'''
output: '''a b
70
hello
hello
hello
(allocCount: 3, deallocCount: 3)'''
"""
import system / ansi_c
proc main(): owned(proc()) =
var a = "a"
var b = "b"
result = proc() =
echo a, " ", b
proc foo(f: (iterator(): int)) =
for i in f(): echo i
proc wrap =
let p = main()
p()
let fIt = iterator(): int = yield 70
foo fIt
wrap()
# bug #11533
proc say = echo "hello"
# Error: internal error: genAssignment: tyNil
var err0: proc() = say
err0()
var ok0: proc()
ok0 = say
ok0()
var ok1 = say
ok1()
when false:
# bug #12443
func newStringIterator(s: string): owned(iterator(): char) =
result = iterator(): char =
var pos = 0
while pos < s.len:
yield s[pos]
inc pos
proc stringIter() =
let si = newStringIterator("foo")
for i in si():
echo i
stringIter()
echo getAllocStats()
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