From eebf0dd7c99a962a33f653c7b38c27025bc3ac86 Mon Sep 17 00:00:00 2001
From: catree <catree.catreus@outlook.com>
Date: Wed, 7 Nov 2018 11:54:51 +0100
Subject: [PATCH] Fix integer overflow when accumulating timing values.

---
 modules/dnn/src/dnn.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/dnn/src/dnn.cpp b/modules/dnn/src/dnn.cpp
index 0afa8d5a27..027b59160a 100644
--- a/modules/dnn/src/dnn.cpp
+++ b/modules/dnn/src/dnn.cpp
@@ -3074,7 +3074,7 @@ void Net::setHalideScheduler(const String& scheduler)
 int64 Net::getPerfProfile(std::vector<double>& timings)
 {
     timings = std::vector<double>(impl->layersTimings.begin() + 1, impl->layersTimings.end());
-    int64 total = std::accumulate(timings.begin(), timings.end(), 0);
+    int64 total = (int64)std::accumulate(timings.begin(), timings.end(), 0.0);
     return total;
 }