parser.rl: allocate structs with wrapper

* ext/json/parser/parser.rl (cJSON_parser_s_allocate): allocate
  structs with making new wrapper objects and get rid of potential
  memory leak.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50660 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/test/json/test_json.rb b/test/json/test_json.rb
index 46f000148f..96ba744478 100755
--- a/test/json/test_json.rb
+++ b/test/json/test_json.rb
@@ -560,4 +560,17 @@ EOT
     assert_equal(Encoding::UTF_8, e.message.encoding, bug10705)
     assert_include(e.message, json, bug10705)
   end if defined?(Encoding::UTF_8)
+
+  if EnvUtil.gc_stress_to_class?
+    def assert_no_memory_leak(code, *rest, **opt)
+      code = "8.times {20_000.times {begin #{code}; rescue NoMemoryError; end}; GC.start}"
+      super(["-rjson/ext/parser"],
+            "GC.add_stress_to_class(JSON::Ext::Parser); "\
+            "#{code}", code, *rest, rss: true, limit: 1.1, **opt)
+    end
+
+    def test_no_memory_leak_allocate
+      assert_no_memory_leak("JSON::Ext::Parser.allocate")
+    end
+  end
 end