Resolves: BZ#1404679

expose IfInfomsg.X__ifi_pad on s390x

golang.spec

@@ -91,7 +91,7 @@
 
 Name:           golang
 Version:        1.7.4
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        The Go Programming Language
 # source tree includes several copies of Mark.Twain-Tom.Sawyer.txt under Public Domain
 License:        BSD and Public Domain
@@ -137,6 +137,9 @@ Patch217: ppc64x-overflow-2.patch
 # Fix for https://github.com/golang/go/issues/17276
 Patch218: tzdata-fix.patch
 
+# Proposed patch by mmunday https://golang.org/cl/35262
+Patch219: s390x-expose-IfInfomsg-X__ifi_pad.patch 
+
 # Having documentation separate was broken
 Obsoletes:      %{name}-docs < 1.1-4
 
@@ -264,6 +267,8 @@ Summary:        Golang shared object libraries
 
 %patch218 -p1
 
+%patch219 -p1
+
 %build
 # print out system information
 uname -a
@@ -480,6 +485,10 @@ fi
 %endif
 
 %changelog
+* Fri Jan 20 2017 Jakub Čajka <jcajka@redhat.com> - 1.7.4-2
+- Resolves: BZ#1404679
+- expose IfInfomsg.X__ifi_pad on s390x
+
 * Fri Dec 02 2016 Jakub Čajka <jcajka@redhat.com> - 1.7.4-1
 - Bump to 1.7.4
 - Resolves: BZ#1400732

s390x-expose-IfInfomsg-X__ifi_pad.patch

@@ -0,0 +1,36 @@
+From 84b8c9ceaa5257f7ff4ab059ff208246ecdfe9d9 Mon Sep 17 00:00:00 2001
+From: Michael Munday <munday@ca.ibm.com>
+Date: Tue, 17 Jan 2017 11:33:38 -0500
+Subject: [PATCH] syscall: expose IfInfomsg.X__ifi_pad on s390x
+
+Exposing this field on s390x improves compatibility with the other
+linux architectures, all of which already expose it.
+
+Fixes #18628 and updates #18632.
+
+Change-Id: I08e8e1eb705f898cd8822f8bee0d61ce11d514b5
+---
+
+diff --git a/src/syscall/ztypes_linux_s390x.go b/src/syscall/ztypes_linux_s390x.go
+index 63c4a83..b589425 100644
+--- a/src/syscall/ztypes_linux_s390x.go
++++ b/src/syscall/ztypes_linux_s390x.go
+@@ -449,12 +449,12 @@
+ }
+ 
+ type IfInfomsg struct {
+-	Family uint8
+-	_      uint8
+-	Type   uint16
+-	Index  int32
+-	Flags  uint32
+-	Change uint32
++	Family     uint8
++	X__ifi_pad uint8
++	Type       uint16
++	Index      int32
++	Flags      uint32
++	Change     uint32
+ }
+ 
+ type IfAddrmsg struct {