From 9502bc27a3b32fa5759ea82a76c22551620ebcd2 Mon Sep 17 00:00:00 2001
From: Nexus Web Development <github@nexwebsites.com>
Date: Sat, 11 Jan 2020 15:24:10 -0500
Subject: [PATCH] Update Date.h (#529)

* Remove arithmetic overflow:

Using operator '-' on a 4 byte value and then casting the result to a 8 byte value. Casting the value to the wider type before calling operator '-' to avoid overflow.
---
 include/date/date.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/date/date.h b/include/date/date.h
index 027a5a4..81ca2d0 100644
--- a/include/date/date.h
+++ b/include/date/date.h
@@ -1564,7 +1564,7 @@ inline
 month
 operator+(const month& x, const months& y) NOEXCEPT
 {
-    auto const mu = static_cast<long long>(static_cast<unsigned>(x)) + (y.count() - 1);
+    auto const mu = static_cast<long long>(static_cast<unsigned>(x)) + y.count() - 1;
     auto const yr = (mu >= 0 ? mu : mu-11) / 12;
     return month{static_cast<unsigned>(mu - yr * 12 + 1)};
 }