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[FFI] FFI::AutoPointer#free causes FFI::AutoPointer#autorelease? to cast NullPointerException #654

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Burgestrand opened this Issue · 0 comments

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@Burgestrand
require "ffi"

class Releasable < FFI::AutoPointer
  def self.release(pointer)
    puts "Release"
    # no op
  end
end

p = FFI::Pointer.new(1)
r = Releasable.new(p)
r.free
p r.autorelease? # => NullPointerException

It’s because when AutoPointer#free is called, the reaper (managed for releasing the pointer) is reassigned to null. This causes AutoPointer#autorelease? to fail, since reaper is now no longer.

@ghost Unknown closed this issue from a commit
Wayne Meissner Fix #654 - FFI::AutoPointer#free causes FFI::AutoPointer#autorelease?…
… to cast NullPointerException
c253096
@ghost ghost closed this in c253096
This issue was closed.
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