From 131db8b0c8eeb4185aaf641e9ab119717b0a860e Mon Sep 17 00:00:00 2001
From: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
Date: Tue, 18 Dec 2018 23:11:40 +0100
Subject: [PATCH] Y2038: add function __gmtime64

Tested with 'make check' on x86_64-linux-gnu and i686-linux.gnu.

	* include/time.h
	(__gmtime64): Add.
	* time/gmtime.c
	(__gmtime64): Add.
	[__TIMESIZE != 64] (__gmtime): Turn into a wrapper.
---
 ChangeLog      |  6 ++++++
 include/time.h |  7 +++++++
 time/gmtime.c  | 20 +++++++++++++++++---
 3 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 4724c84e08..fe1b8fcec6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2018-12-18  Albert ARIBAUD <albert.aribaud@3adev.fr>
 
+	* include/time.h
+	(__gmtime64): Add.
+	* time/gmtime.c
+	(__gmtime64): Add.
+	[__TIMESIZE != 64] (__gmtime): Turn into a wrapper.
+
 	* include/time.h
 	(__localtime64_r): Add.
 	* time/localtime.c
diff --git a/include/time.h b/include/time.h
index 876b8a2b5f..c5881acf9f 100644
--- a/include/time.h
+++ b/include/time.h
@@ -79,6 +79,13 @@ extern struct tm *__gmtime_r (const time_t *__restrict __timer,
 			      struct tm *__restrict __tp);
 libc_hidden_proto (__gmtime_r)
 
+#if __TIMESIZE == 64
+# define __gmtime64 gmtime
+#else
+extern struct tm *__gmtime64 (const __time64_t *__timer);
+libc_hidden_proto (__gmtime64)
+#endif
+
 /* Compute the `struct tm' representation of T,
    offset OFFSET seconds east of UTC,
    and store year, yday, mon, mday, wday, hour, min, sec into *TP.
diff --git a/time/gmtime.c b/time/gmtime.c
index bda09bc021..ee901c3ba1 100644
--- a/time/gmtime.c
+++ b/time/gmtime.c
@@ -28,10 +28,24 @@ __gmtime_r (const time_t *t, struct tm *tp)
 libc_hidden_def (__gmtime_r)
 weak_alias (__gmtime_r, gmtime_r)
 
-
-/* Return the `struct tm' representation of *T in UTC.	*/
+/* Return the `struct tm' representation of *T in UTC.  */
 struct tm *
-gmtime (const time_t *t)
+__gmtime64 (const __time64_t *t)
 {
   return __tz_convert (*t, 0, &_tmbuf);
 }
+
+/* Provide a 32-bit variant if needed.  */
+
+#if __TIMESIZE != 64
+
+libc_hidden_def (__gmtime64)
+
+struct tm *
+gmtime (const time_t *t)
+{
+  __time64_t t64 = *t;
+  return __gmtime64 (&t64);
+}
+
+#endif