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* fixes #19101; zero initialization union casts (#22185)ringabout2023-06-291-0/+26
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;43030857+ringabout@users.noreply.github.com> 2023-04-21 21:37:58 +0800 committer GitHub <noreply@github.com> 2023-04-21 15:37:58 +0200 stdlib tests now check refc too (#21664)' href='/ahoang/Nim/commit/tests/stdlib/tuserlocks.nim?h=devel&id=4fa86422c057ae0615a6f06a6fd0a538e1bce029'>4fa86422c ^ 
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discard """
  matrix: "--mm:refc; --mm:orc"
"""

import std/rlocks
import std/assertions

var r: RLock
r.initRLock()
doAssert r.tryAcquire()
doAssert r.tryAcquire()
r.release()
r.release()

block:
  var x = 12
  withRLock r:
    inc x
  doAssert x == 13

r.deinitRLock()