Issue #20907 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED to 3.1: REQUIRED, 3.2: DONE, 3.3: REQUIRED ruby_3_2 commit:87249cbddb5dbac16cb7f0fa33958a42389759cb merged revision(s) commit:a8c2d5e7bee5fad0965baeb58d312ddc5932ec26. ---------------------------------------- Bug #20907: Fiber scheduler does not correctly re-lock mutex if `Mutex#sleep` is interrupted. https://bugs.ruby-lang.org/issues/20907#change-110811 * Author: ioquatix (Samuel Williams) * Status: Closed * Assignee: ioquatix (Samuel Williams) * Backport: 3.1: REQUIRED, 3.2: DONE, 3.3: REQUIRED ---------------------------------------- The following test fails with a `ThreadError` instead of a `RuntimeError`: ```ruby def test_condition_variable condition_variable = ::Thread::ConditionVariable.new mutex = ::Thread::Mutex.new error = nil thread = Thread.new do Thread.current.report_on_exception = false scheduler = Scheduler.new Fiber.set_scheduler scheduler fiber = Fiber.schedule do begin mutex.synchronize do condition_variable.wait(mutex) end rescue => error end end fiber.raise(RuntimeError) end thread.join assert_kind_of RuntimeError, error end ``` Fix: https://github.com/ruby/ruby/pull/12158 -- https://bugs.ruby-lang.org/