bug fixed for TypeReference oom

src/main/java/com/alibaba/fastjson/util/FieldInfo.java

@@ -14,6 +14,7 @@ import java.lang.reflect.Type;
 import java.lang.reflect.TypeVariable;
 import java.util.Map;
 
+import com.alibaba.fastjson.TypeReference;
 import com.alibaba.fastjson.annotation.JSONField;
 
 public class FieldInfo implements Comparable<FieldInfo> {
@@ -352,8 +353,9 @@ public class FieldInfo implements Comparable<FieldInfo> {
             }
 
             if (changed) {
-                fieldType = new ParameterizedTypeImpl(arguments, parameterizedFieldType.getOwnerType(),
-                                                      parameterizedFieldType.getRawType());
+                ParameterizedTypeImpl fieldTypeRaw = new ParameterizedTypeImpl(arguments, parameterizedFieldType.getOwnerType(),
+                        parameterizedFieldType.getRawType());
+                fieldType = TypeReference.intern(fieldTypeRaw);
                 return fieldType;
             }
         }

src/test/java/com/alibaba/json/bvt/typeRef/TypeReferenceTest14.java

@@ -0,0 +1,61 @@
+package com.alibaba.json.bvt.typeRef;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson.TypeReference;
+import com.alibaba.fastjson.annotation.JSONField;
+import com.alibaba.fastjson.parser.ParserConfig;
+import java.util.List;
+import junit.framework.TestCase;
+
+import java.io.Serializable;
+
+/**
+ * Created by wenshao on 09/02/2017.
+ */
+public class TypeReferenceTest14 extends TestCase {
+    public void test_0() throws Exception {
+        String str = "{\"result\":{\"item\":[{\"key\":\"123\"}]}}";
+
+        ParserConfig config = new ParserConfig();
+        JSONObject.parseObject(str, OpenSearchResponse.class, config);
+        JSONObject.parseObject(str
+                , new TypeReference<OpenSearchResponse<JSONObject>>() {}.getType()
+                , config, JSON.DEFAULT_PARSER_FEATURE);
+
+        int size = config.getDeserializers().size();
+        for (int i = 0; i < 100 * 1; ++i) {
+            JSONObject.parseObject(str
+                    , new TypeReference<OpenSearchResponse<JSONObject>>() {}.getType()
+                    , config, JSON.DEFAULT_PARSER_FEATURE);
+            assertEquals(size, config.getDeserializers().size());
+        }
+    }
+
+    public static class OpenSearchResponse<T> {
+
+        private OpenSearchResult<T> result;
+
+        public OpenSearchResult<T> getResult() {
+            return result;
+        }
+
+        public void setResult(OpenSearchResult<T> result) {
+            this.result = result;
+        }
+
+
+    }
+
+    public static class OpenSearchResult<T> {
+        private List<T> item;
+
+        public List<T> getItem() {
+            return item;
+        }
+
+        public void setItem(List<T> item) {
+            this.item = item;
+        }
+    }
+}