From 2ea5115bccc5940d7e3082279ae06e3bdcc36423 Mon Sep 17 00:00:00 2001
From: arvidn <arvid@libtorrent.org>
Date: Sun, 1 Oct 2017 19:47:01 +0200
Subject: [PATCH] fix the torrent_info size overflow check

---
 src/torrent_info.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/torrent_info.cpp b/src/torrent_info.cpp
index ee55fd179..b6a7710ff 100644
--- a/src/torrent_info.cpp
+++ b/src/torrent_info.cpp
@@ -1016,9 +1016,8 @@ namespace {
 		// we want this division to round upwards, that's why we have the
 		// extra addition
 
-		if (files.total_size() >=
-			(std::numeric_limits<std::int64_t>::max() / files.piece_length())
-			- files.piece_length())
+		if (files.total_size() >= static_cast<std::int64_t>(std::numeric_limits<int>::max() - files.piece_length())
+			* files.piece_length())
 		{
 			ec = errors::too_many_pieces_in_torrent;
 			// mark the torrent as invalid