sink usage crashes with literals (refc)

[arnetheduck]

Description

type Xxx = object
  value: string

proc complete(xxx: ref Xxx, v: sink string) =
  xxx.value = move(v)

let yyy = (ref Xxx)()

yyy.complete("test")

Nim Version

1.6.12, devel (refc)

Current Output

testit.nim(57) testit
testit.nim(53) complete
Nim/lib/system/gc.nim(286) asgnRef
Nim/lib/system/gc.nim(231) incRef
Nim/lib/system/arithmetics.nim(407) pluspercent
Nim/lib/system/excpt.nim(631) signalHandler
SIGSEGV: Illegal storage access. (Attempt to read from nil?)

Expected Output

no crash (this is obviously a reduced example)

Possible Solution

No response

Additional Information

No response