http client crashes when sending large chunk data via PUT method

When sending large chuck of data via PUT method, http client crashes.
The requested buffer size doesn't match the one internal buffer(accumulating data) allocated.

Test case as following:

TEST(HttpClient, put_request_for_file_with_large_chunk_succeeds)
  {
      auto client = http::make_client();
      auto url = std::string(httpbin::host) + httpbin::resources::put();

      // create temp file with large chunk
      const std::size_t size = 1024*1024;
      std::ofstream ofs("tmp.dat", std::ios::binary | std::ios::out);
      ofs.seekp(size);
      ofs.write("", 1);
      ofs.close();

      std::ifstream payload("tmp.dat");
      auto request = client->put(http::Request::Configuration::from_uri_as_string(url),
                                 payload,
                                 size);

      json::Value root;
      json::Reader reader;

      auto response = request->execute(default_progress_reporter);

      EXPECT_EQ(core::net::http::Status::ok, response.status);
      EXPECT_TRUE(reader.parse(response.body, root));
      EXPECT_EQ(url, root["url"].asString());
  }

......
[----------] 1 test from HttpClient
[ RUN ] HttpClient.put_request_for_file_with_large_chunk_succeeds
Segmentation fault (core dumped)