merge revision(s) 67201: [Backport #15650]

eval.c: clear internal errinfo

	* eval.c (ruby_cleanup): clear internal error info when invoking
	  end procs.  [ruby-core:91731] [Bug #15650]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@67392 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

eval.c

@@ -173,6 +173,7 @@ ruby_cleanup(volatile int ex)
 
       step_0: step++;
 	errs[1] = th->errinfo;
+	if (THROW_DATA_P(th->errinfo)) th->errinfo = Qnil;
 	th->safe_level = 0;
 	ruby_init_stack(&errs[STACK_UPPER(errs, 0, 1)]);
 

test/ruby/test_beginendblock.rb

@@ -148,4 +148,26 @@ EOS
       end
     end;
   end
+
+  if defined?(fork)
+    def test_internal_errinfo_at_exit
+      # TODO: use other than break-in-fork to throw an internal
+      # error info.
+      error, pid, status = IO.pipe do |r, w|
+        pid = fork do
+          r.close
+          STDERR.reopen(w)
+          at_exit do
+            $!.class
+          end
+          break
+        end
+        w.close
+        [r.read, *Process.wait2(pid)]
+      end
+      assert_not_predicate(status, :success?)
+      assert_not_predicate(status, :signaled?)
+      assert_match(/unexpected break/, error)
+    end
+  end
 end

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.4.6"
 #define RUBY_RELEASE_DATE "2019-03-31"
-#define RUBY_PATCHLEVEL 353
+#define RUBY_PATCHLEVEL 354
 
 #define RUBY_RELEASE_YEAR 2019
 #define RUBY_RELEASE_MONTH 3