diff --git a/inc/external/register/tilingdata_base.h b/inc/external/register/tilingdata_base.h
index 8618184816139c193bc55f24587a816698d0b715..cff81b69d6e1ee2f0ffc02ca6de7b0173909ac7e 100644
--- a/inc/external/register/tilingdata_base.h
+++ b/inc/external/register/tilingdata_base.h
@@ -27,17 +27,18 @@ struct CharPtrCmp {
 
 class StructSizeInfoBase {
 public:
-  static StructSizeInfoBase &GetInstance()
-  {
-    static StructSizeInfoBase instance;
-    return instance;
-  }
+  static StructSizeInfoBase &GetInstance();
   void SetStructSize(const char *structType, const size_t structSize)
   {
     if (structSizeInfo.find(structType) != structSizeInfo.end()) {
       return;
     }
-    structSizeInfo[structType] = structSize;
+    auto len = strlen(structType);
+    auto str = (char *)malloc(len + 1);
+    if (str != nullptr) {
+      strcpy(str, structType);
+    }
+    structSizeInfo[str] = structSize;
   }
   size_t GetStructSize(const char *structType)
   {
@@ -45,7 +46,11 @@ public:
   }
 private:
   StructSizeInfoBase() { };
-  ~StructSizeInfoBase() { };
+  ~StructSizeInfoBase() {
+    for (auto &it:structSizeInfo) {
+      std::free((void *)it.first);
+    }
+  };
   StructSizeInfoBase(const StructSizeInfoBase &);
   StructSizeInfoBase &operator=(const StructSizeInfoBase &);
   std::map<const char *, size_t, CharPtrCmp> structSizeInfo;
diff --git a/register/ascendc/tilingdata_base.cc b/register/ascendc/tilingdata_base.cc
index 0cdcbcf7c71d54e29a2723aa28db3c12f4eed2c0..2a2b75329e2752b4f0de44f1651ab28c53a5049f 100644
--- a/register/ascendc/tilingdata_base.cc
+++ b/register/ascendc/tilingdata_base.cc
@@ -147,6 +147,11 @@ CTilingDataClassFactory &CTilingDataClassFactory::GetInstance()
   return instance;
 }
 
+StructSizeInfoBase &StructSizeInfoBase::GetInstance() {
+  static StructSizeInfoBase instance;
+  GELOGD("instance's address = %p", &instance);
+  return instance;
+}
 void CTilingDataClassFactory::RegisterTilingData(const char *op_type,
                                                  const TilingDataConstructor constructor) {
   instance_.emplace(op_type, constructor);
diff --git a/tests/stub/gen_stubapi.py b/tests/stub/gen_stubapi.py
index 62a14faae37449e3b98263cfe8966cd0573697ca..447b3e8b6a2aec84eba844fe6dc9994b286b6a4e 100755
--- a/tests/stub/gen_stubapi.py
+++ b/tests/stub/gen_stubapi.py
@@ -119,6 +119,8 @@ RETURN_STATEMENTS = {
     'HiddenInputFuncRegistry&': '    static HiddenInputFuncRegistry instance;\n    return instance;',
     'CTilingDataClassFactory& CTilingDataClassFactory::GetInstance':
         '    static CTilingDataClassFactory instance;\n    return instance;',
+    'StructSizeInfoBase& StructSizeInfoBase::GetInstance':
+        '    static StructSizeInfoBase instance;\n    return instance;',
     'FrameworkRegistry& FrameworkRegistry::': '    static FrameworkRegistry instance;\n    return instance;',
     'ScreenPrinter& ScreenPrinter::': '    static ScreenPrinter instance;\n    return instance;',
     'ErrorTracking& ErrorTracking::': '    static ErrorTracking instance;\n    return instance;',