From a220bda05d2aa185a2fb9aa721928f139fe926a9 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Fri, 13 Jan 2017 14:38:00 +0100
Subject: [PATCH] check return value from std::fread

---
 include/mapnik/util/file_io.hpp | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/include/mapnik/util/file_io.hpp b/include/mapnik/util/file_io.hpp
index bb496b3a2..00c925006 100644
--- a/include/mapnik/util/file_io.hpp
+++ b/include/mapnik/util/file_io.hpp
@@ -83,11 +83,8 @@ public:
         if (!size_) return nullptr;
         std::fseek(file_.get(), 0, SEEK_SET);
         data_type buffer(new char[size_]);
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunknown-pragmas"
-#pragma GCC diagnostic ignored "-Wunused-result"
-        std::fread(buffer.get(), size_, 1, file_.get());
-#pragma GCC diagnostic pop
+        auto count = std::fread(buffer.get(), size_, 1, file_.get());
+        if (count != 1) return nullptr;
         return buffer;
     }
 private: