Spawn test fails to compile with gc:arc

[Kartiku]

Code fails to compile with --gc:arc.

Example

import threadpool

proc foo(): seq[int] =
  newSeq[int]()

let t  = spawn foo()
echo ^t

Current Output

d:\d\test2.nim(6, 16) template/generic instantiation of `nimCreateFlowVar` from here
C:\Users\user\.choosenim\toolchains\nim-#devel\lib\pure\concurrency\threadpool.nim(214, 6) Error: cannot bind another '=destroy' to: FlowVarObj; previous declaration was constructed here implicitly: C:\Users\user\.choosenim\toolchains\nim-#devel\lib\pure\concurrency\threadpool.nim(211, 48)

Expected Output

@[]

Additional Information

• Works as expected with default gc
• perhaps related to this post?

$ nim -v
Nim Compiler Version 1.3.1 [Windows: amd64]
Compiled at 2020-04-14
Copyright (c) 2006-2020 by Andreas Rumpf

git hash: 2c93d1684e44dcec160083eafd1144e4ddeb0ad8
active boot switches: -d:release

[cooldome]

Fixed in #13897, but blocked by #13935

[cooldome]

Should be fixed now in latest devel. Could you please retest?

[Araq]

Works for me too, closing.

[Kartiku]

Was waiting for the nightly build so i can use choosenim. Works for me. Thank you @cooldome