From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Thu, 2 May 2024 11:20:54 +0000 (+0200)
Subject: reference: switch is_leap_close() from time_t to double
X-Git-Tag: 4.6-pre1~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=adaca0ff19308f2bb2c0e2eb3247ea778bfe6549;p=thirdparty%2Fchrony.git

reference: switch is_leap_close() from time_t to double

Avoid undefined behavior in the timestamp conversion from double to
time_t in REF_IsLeapSecondClose() with NTP sources configured with a
large offset correction.
---

diff --git a/reference.c b/reference.c
index ffe290c9..009d7c98 100644
--- a/reference.c
+++ b/reference.c
@@ -1291,7 +1291,7 @@ REF_DisableLocal(void)
 #define LEAP_SECOND_CLOSE 5
 
 static int
-is_leap_close(time_t t)
+is_leap_close(double t)
 {
   return leap_when != 0 &&
          t >= leap_when - LEAP_SECOND_CLOSE && t < leap_when + LEAP_SECOND_CLOSE;