diff options
| -rw-r--r-- | test/ruby/test_thread.rb | 14 | ||||
| -rw-r--r-- | thread.c | 4 |
2 files changed, 18 insertions, 0 deletions
diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb index cdb7309fb7..a018f3cdac 100644 --- a/test/ruby/test_thread.rb +++ b/test/ruby/test_thread.rb @@ -1249,6 +1249,20 @@ q.pop assert_predicate(status, :success?, bug9751) end if Process.respond_to?(:fork) + def test_fork_value + bug18902 = "[Bug #18902]" + th = Thread.start { sleep 2 } + begin + pid = fork do + th.value + end + _, status = Process.wait2(pid) + assert_predicate(status, :success?, bug18902) + ensure + th.kill + end + end if Process.respond_to?(:fork) + def test_fork_while_locked m = Thread::Mutex.new thrs = [] @@ -1214,6 +1214,10 @@ thread_value(VALUE self) { rb_thread_t *th = rb_thread_ptr(self); thread_join(th, Qnil, 0); + if (th->value == Qundef) { + // If the thread is dead because we forked th->value is still Qundef. + return Qnil; + } return th->value; } |