From 19850b639e445b6c13e8fa47cf9745fa617f53eb Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Sat, 20 Oct 2018 12:18:03 +0200 Subject: [PATCH] ar71xx: fix packed-not-aligned error with GCC 8. Building ar71xx currently fails with: In file included from ./include/linux/ipv6.h:5, from ./include/net/ipv6.h:16, from ./include/net/inetpeer.h:16, from ./include/net/ip_fib.h:24, from ./include/net/switchdev.h:17, from ./include/net/dsa.h:23, from arch/mips/ath79/dev-dsa.h:15, from arch/mips/ath79/dev-dsa.c:17: ./include/uapi/linux/ipv6.h:107:1: error: alignment 1 of 'struct ipv6_destopt_hao' is less than 2 [-Werror=packed-not-aligned] } __attribute__((packed)); Address this issue by correcting the alignment of the struct packing pragma accordingly. Fixes: FS#1805 Reported-by: Pascal Ernster [reword subject, rewrap commit message] Signed-off-by: Jo-Philipp Wich --- .../ar71xx/patches-4.14/910-unaligned_access_hacks.patch | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/linux/ar71xx/patches-4.14/910-unaligned_access_hacks.patch b/target/linux/ar71xx/patches-4.14/910-unaligned_access_hacks.patch index c642176d1e..99624f07c1 100644 --- a/target/linux/ar71xx/patches-4.14/910-unaligned_access_hacks.patch +++ b/target/linux/ar71xx/patches-4.14/910-unaligned_access_hacks.patch @@ -129,6 +129,15 @@ struct ip_auth_hdr { --- a/include/uapi/linux/ipv6.h +++ b/include/uapi/linux/ipv6.h +@@ -104,7 +104,7 @@ struct ipv6_destopt_hao { + __u8 type; + __u8 length; + struct in6_addr addr; +-} __attribute__((packed)); ++} __attribute__((packed, aligned(2))); + + /* + * IPv6 fixed header @@ -131,7 +131,7 @@ struct ipv6hdr { struct in6_addr saddr; -- 2.30.2