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discard """
matrix: "-u:nimPreviewNonVarDestructor;"
"""
type DistinctSeq* = distinct seq[int]
# `=destroy`(cast[ptr DistinctSeq](0)[])
var x = @[].DistinctSeq
`=destroy`(x)
import std/options
# bug #24801
type
B[T] = object
case r: bool
of false:
v: ref int
of true:
x: T
E = distinct seq[int]
U = ref object of RootObj
G = ref object of U
proc a(): E = default(E)
method c(_: U): seq[E] {.base.} = discard
proc p(): seq[E] = c(default(U))
method c(_: G): seq[E] = discard E(newSeq[seq[int]](1)[0])
method y(_: U) {.base.} =
let s = default(B[tuple[f: B[int], w: B[int]]])
discard some(s.x)
|
