From 1902b8e8fb03a7c41316fa80c589a51aa3923aa9 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Thu, 30 Nov 2017 10:45:30 -0500
Subject: [PATCH] Range check year on parse

---
 include/date/date.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/date/date.h b/include/date/date.h
index 9902b0c..5af9dd2 100644
--- a/include/date/date.h
+++ b/include/date/date.h
@@ -6996,6 +6996,8 @@ from_stream(std::basic_istream<CharT, Traits>& is, const CharT* fmt,
                 else if (day(static_cast<unsigned>(d)) != ymd.day())
                     goto broken;
             }
+            if (Y < static_cast<int>(year::min()) || Y > static_cast<int>(year::max()))
+                goto broken;
             auto ymd = year{Y}/m/d;
             if (wd != not_a_weekday && ymd.ok())
             {