From: Ivan Grokhotov <ivan@espressif.com>
Date: Wed, 4 Nov 2020 18:30:58 +0000 (-0500)
Subject: Fix 32-bit integer overflow when calculating TZ rules
X-Git-Tag: newlib-4.0.0~20
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=b7a357e92ebb7696cfb8117e1fc838d4e93f144e;p=newlib-cygwin.git

Fix 32-bit integer overflow when calculating TZ rules
---

diff --git a/newlib/libc/time/tzcalc_limits.c b/newlib/libc/time/tzcalc_limits.c
index e0ea6549c..00044a5d3 100644
--- a/newlib/libc/time/tzcalc_limits.c
+++ b/newlib/libc/time/tzcalc_limits.c
@@ -66,7 +66,7 @@ __tzcalc_limits (int year)
 	}
 
       /* store the change-over time in GMT form by adding offset */
-      tz->__tzrule[i].change = days * SECSPERDAY +
+      tz->__tzrule[i].change = (time_t) days * SECSPERDAY +
       tz->__tzrule[i].s + tz->__tzrule[i].offset;
     }