[LU-12764] ubuntu16 client build failure

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0

Environment

NAME="Ubuntu"
VERSION="16.04.5 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.5 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial

wangsl@ubuntu:~/lustre-release$ gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609

• Severity: 3
• Assignee: Wang Shilong (Inactive)
• Reporter: Wang Shilong (Inactive)

Description

In file included from include/linux/kernel.h:10:0,
                 from include/linux/list.h:9,
                 from include/linux/random.h:10,
                 from /home/wangsl/lustre-release/lnet/lnet/router.c:25:
/home/wangsl/lustre-release/lnet/lnet/router.c: In function ‘lnet_del_route’:
include/linux/compiler.h:177:26: error: ‘lp’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  case 8: *(__u64 *)res = *(volatile __u64 *)p; break;  \
                          ^
/home/wangsl/lustre-release/lnet/lnet/router.c:754:20: note: ‘lp’ was declared here
  struct lnet_peer *lp;
                    ^
/home/wangsl/lustre-release/lnet/lnet/router.c: At top level:
cc1: error: unrecognized command line option ‘-Wno-stringop-overflow’ [-Werror]
cc1: error: unrecognized command line option ‘-Wno-stringop-truncation’ [-Werror]
cc1: error: unrecognized command line option ‘-Wno-format-truncation’ [-Werror]
cc1: all warnings being treated as errors