process.c: add Process.last_status

* process.c (proc_s_last_status): add Process.last_status
  [ruby-core:83514] [Feature #14043]

* test/ruby/test_process.rb (test_last_status): add a test case for
  Process.last_status.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61143 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index d68aef624e..e4c7bc9190 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -2352,4 +2352,9 @@ EOS
       end
     end
   end
+
+  def test_last_status
+    Process.wait spawn(RUBY, "-e", "exit 13")
+    assert_same(Process.last_status, $?)
+  end
 end