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fix dead-lock in WeakKeyDict #33756

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Closed

fix dead-lock in WeakKeyDict #33756

wants to merge 2 commits into from

Commits on Nov 3, 2019

  1. fix deadlock in WeakKeyDict iterate! method 

    The command `x = WeakKeyDict(:a => 4)` followed by `push!(x, :b => 2)`
gives a deadlock. The reason is a `lock` command in the iterate! method
where the registered finalizer function with `unlock` never got called.
    Hans-Peter Suter committed Nov 3, 2019
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  2. clarify that objects may be garbage collected

    Hans-Peter Suter committed Nov 3, 2019
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