[GPU] Initialize string type data with zero-charactor

src/bindings/python/src/pyopenvino/core/common.cpp

@@ -187,17 +187,15 @@ void fill_tensor_from_strings(ov::Tensor& tensor, py::array& array) {
     }
     py::buffer_info buf = array.request();
     auto data = tensor.data<std::string>();
+    std::cout << "fill_tensor_from_strings()" << std::endl;
     for (size_t i = 0; i < tensor.get_size(); ++i) {
         char* ptr = reinterpret_cast<char*>(buf.ptr) + (i * buf.itemsize);
         // TODO: check other unicode kinds? 2BYTE and 1BYTE?
         PyObject* _unicode_obj =
             PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND, reinterpret_cast<void*>(ptr), buf.itemsize / 4);
         PyObject* _utf8_obj = PyUnicode_AsUTF8String(_unicode_obj);
         const char* _tmp_str = PyBytes_AsString(_utf8_obj);
-        std::string d(_tmp_str);
-        if (!d.empty()) {
-            data[i] = d;
-        }
+        data[i] = std::string(_tmp_str);
         Py_XDECREF(_unicode_obj);
         Py_XDECREF(_utf8_obj);
     }

src/plugins/intel_gpu/src/plugin/sync_infer_request.cpp

@@ -591,6 +591,12 @@ void SyncInferRequest::allocate_input(const ov::Output<const ov::Node>& port, si
     auto element_type = port.get_element_type();
 
     m_user_inputs[input_idx] = { create_host_tensor(shape, element_type), TensorOwner::PLUGIN };
+    if (element_type == ov::element::string) {
+        std::string* data = m_user_inputs.at(input_idx).ptr->data<std::string>();
+        for (size_t i = 0; i < m_user_inputs.at(input_idx).ptr->get_size(); ++i) {
+            data[i] = '\0';
+        }
+    }
     ov::ISyncInferRequest::set_tensor(port, m_user_inputs.at(input_idx).ptr);
 }