From a4d2e8b2701941eb69b34fb55d76e8b4fb033615 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aur=C3=A9lien=20Delobelle?=
 <aurelien.delobelle@backmarket.com>
Date: Tue, 14 Sep 2021 14:00:54 +0200
Subject: [PATCH] Fix mixed log using string concat

---
 include/datadog/opentracing.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/datadog/opentracing.h b/include/datadog/opentracing.h
index 7b2636bd..d89bf188 100644
--- a/include/datadog/opentracing.h
+++ b/include/datadog/opentracing.h
@@ -119,16 +119,16 @@ struct TracerOptions {
   LogFunc log_func = [](LogLevel level, ot::string_view message) {
     switch (level) {
       case LogLevel::debug:
-        std::cerr << "debug: " << message << std::endl;
+        std::cerr << "debug: " + message + std::endl;
         break;
       case LogLevel::info:
-        std::cerr << "info: " << message << std::endl;
+        std::cerr << "info: " + message + std::endl;
         break;
       case LogLevel::error:
-        std::cerr << "error: " << message << std::endl;
+        std::cerr << "error: " + message + std::endl;
         break;
       default:
-        std::cerr << "<unknown level>: " << message << std::endl;
+        std::cerr << "<unknown level>: " + message + std::endl;
         break;
     }
   };