Bug #20255: Embedded arrays aren't moved correctly across ractors

• Status: Assigned
• Assignee: ko1 (Koichi Sasada)
• Target version: -
• Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN

[luke-gru (Luke Gruber)]

ractor.send(ary, move: true) works incorrectly because if ary is embedded, the new moved object doesn't populate its own embedded space, it uses the MovedObject's embedded space.

example:

r = Ractor.new {
  inner_ary = receive
  values = {}
  values[:equal] = (inner_ary == ["",{},2,3,4,5,6])
  values[:string] = inner_ary.to_s
  values
}
ary = [String.new,Hash.new,2,3,4,5,6]
r.send(ary, move: true)
r_values = r.take
p r_values[:equal]
p r_values[:string]

# => false
# => "[\"\", {}, 2, 2.0, 21747991570, String, 3]"

[luke-gru (Luke Gruber)]

I sent a PR here: https://github.com/ruby/ruby/pull/9918

[ko1 (Koichi Sasada)]

• Assignee set to ko1 (Koichi Sasada)

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Assigned