From 0db9d21eb0a2dbc3e6279437a1fbfc74bfa4263a Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Sun, 19 Jul 2020 18:40:55 -0400
Subject: [PATCH] Fix #571

---
 example/simplesvr.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/example/simplesvr.cc b/example/simplesvr.cc
index a84bb1e..17a9e98 100644
--- a/example/simplesvr.cc
+++ b/example/simplesvr.cc
@@ -46,7 +46,7 @@ string dump_multipart_files(const MultipartFormDataMap &files) {
     snprintf(buf, sizeof(buf), "content type: %s\n", file.content_type.c_str());
     s += buf;
 
-    snprintf(buf, sizeof(buf), "text length: %lu\n", file.content.size());
+    snprintf(buf, sizeof(buf), "text length: %zu\n", file.content.size());
     s += buf;
 
     s += "----------------\n";