From c11511b94b316fcbef0ba17c50ef600d6c8f5d0e Mon Sep 17 00:00:00 2001
From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Mon, 26 Sep 2016 14:52:10 +0200
Subject: [PATCH] Revert "Merge pull request #947 from mind04/right"

This code only served to fix a combination of system misconfiguration and a
bug in glibc. Meanwhile it turns out this code is incorrect. Removing it.

(cherry picked from commit c96765dae8da4c9322ca4a80e3e101d64faf141f)
---
 pdns/rcpgenerator.cc |  2 +-
 pdns/unix_utility.cc | 27 ---------------------------
 pdns/utility.hh      |  3 +--
 3 files changed, 2 insertions(+), 30 deletions(-)

diff --git a/pdns/rcpgenerator.cc b/pdns/rcpgenerator.cc
index 28edc95f4..5df380622 100644
--- a/pdns/rcpgenerator.cc
+++ b/pdns/rcpgenerator.cc
@@ -495,7 +495,7 @@ void RecordTextWriter::xfrTime(const uint32_t& val)
   
   struct tm tm;
   time_t time=val; // Y2038 bug!
-  Utility::gmtime_r(&time, &tm);
+  gmtime_r(&time, &tm);
 
   char tmp[16];
   snprintf(tmp,sizeof(tmp)-1, "%04d%02d%02d" "%02d%02d%02d", 
diff --git a/pdns/unix_utility.cc b/pdns/unix_utility.cc
index ed58314d0..9fbe2c860 100644
--- a/pdns/unix_utility.cc
+++ b/pdns/unix_utility.cc
@@ -305,30 +305,3 @@ time_t Utility::timegm(struct tm *const t)
   return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
 }
 
-// we have our own gmtime_r because the one in GNU libc violates POSIX/SuS
-// by supporting leap seconds when TZ=right/UTC
-void Utility::gmtime_r(const time_t *timer, struct tm *tmbuf) {
-
-  int monthdays[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
-  int days = *timer / 86400;
-  int leapdays = (days + 671) / 1461;
-  int leapydays = (days + 365) / 1461;
-
-  tmbuf->tm_hour = *timer / 3600 % 24;
-  tmbuf->tm_min = *timer / 60 % 60;
-  tmbuf->tm_sec = *timer % 60;
-
-  tmbuf->tm_year = (days - leapdays) / 365 + 70;
-  tmbuf->tm_yday = days - leapydays - (tmbuf->tm_year - 70) * 365 + 1;
-
-  tmbuf->tm_mon = 0;
-  tmbuf->tm_mday = tmbuf->tm_yday;
-  monthdays[1] += isleap(tmbuf->tm_year + 1900);
-  while (monthdays[tmbuf->tm_mon] < tmbuf->tm_mday) {
-    tmbuf->tm_mday -= monthdays[tmbuf->tm_mon];
-    tmbuf->tm_mon++;
-  }
-
-  tmbuf->tm_wday = (days + 4) % 7; // Day 0 is magic thursday ;)
-  tmbuf->tm_isdst = 0;
-}
diff --git a/pdns/utility.hh b/pdns/utility.hh
index 0f344a27a..8ea95fadc 100644
--- a/pdns/utility.hh
+++ b/pdns/utility.hh
@@ -151,8 +151,7 @@ public:
   static void usleep( unsigned long usec );
 
   static time_t timegm(struct tm *tm);
-
-  static void gmtime_r(const time_t *timer, struct tm *tmbuf);
+  
 };
 
 
-- 
2.40.0