add file exists check (#36628)

* add file check

* add ut

paddle/fluid/inference/utils/io_utils.cc

@@ -197,6 +197,9 @@ void SerializeShapeRangeInfo(
 void DeserializeShapeRangeInfo(
     const std::string &path, paddle::inference::proto::ShapeRangeInfos *info) {
   int fd = open(path.c_str(), O_RDONLY);
+  if (fd == -1) {
+    PADDLE_THROW(platform::errors::NotFound("File [%s] is not found.", path));
+  }
   google::protobuf::io::FileInputStream *is =
       new google::protobuf::io::FileInputStream(fd);
   google::protobuf::TextFormat::Parse(is, info);

paddle/fluid/inference/utils/io_utils_tester.cc

@@ -118,4 +118,8 @@ TEST(shape_info_io, read_and_write) {
   std::vector<std::string> names{"test1"};
   paddle::inference::UpdateShapeRangeInfo(path, min_shape, max_shape, opt_shape,
                                           names);
+
+  ASSERT_THROW(paddle::inference::DeserializeShapeRangeInfo(
+                   "no_exists_file", &min_shape, &max_shape, &opt_shape);
+               , paddle::platform::EnforceNotMet);
 }