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Fri, 11 Mar 2022 13:23:05 +0000 Date: Fri, 11 Mar 2022 21:22:22 +0800 From: kernel test robot To: David Gow Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, 0day robot Subject: lib/list-test.c:662:45: warning: variable 'head' set but not used Message-ID: <202203112152.zpAjsGQF-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/0day-ci/linux/commits/UPDATE-20220311-151720/Xiaomeng-Tong/list_for_each_entry-make-iterator-invisiable-outside-the-loop/20220301-160113 head: 54ae283053c127aac4b946dffa0f31f9885dbb77 commit: 32c7dc1050a5376225f79589948ac5a63cb75e5a list: test: Add a test for list_traverse date: 6 hours ago config: arc-randconfig-r043-20220310 (https://download.01.org/0day-ci/archive/20220311/202203112152.zpAjsGQF-lkp@intel.com/config) compiler: arceb-elf-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/32c7dc1050a5376225f79589948ac5a63cb75e5a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20220311-151720/Xiaomeng-Tong/list_for_each_entry-make-iterator-invisiable-outside-the-loop/20220301-160113 git checkout 32c7dc1050a5376225f79589948ac5a63cb75e5a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash kernel/ lib/ mm/ net/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): lib/list-test.c:15:9: error: expected specifier-qualifier-list before 'list_traversal_head' 15 | list_traversal_head(struct list_test_struct, head, list); | ^~~~~~~~~~~~~~~~~~~ lib/list-test.c: In function 'list_test_list_traverse': lib/list-test.c:665:29: error: 'struct list_test_struct' has no member named 'head' 665 | INIT_LIST_HEAD(&head.head); | ^ lib/list-test.c:669:54: error: 'struct list_test_struct' has no member named 'head' 669 | list_add_tail(&entries[i].list, &head.head); | ^ lib/list-test.c:674:9: error: implicit declaration of function 'list_traverse' [-Werror=implicit-function-declaration] 674 | list_traverse(cur, &head.head, list) { | ^~~~~~~~~~~~~ lib/list-test.c:674:23: error: 'cur' undeclared (first use in this function) 674 | list_traverse(cur, &head.head, list) { | ^~~ lib/list-test.c:674:23: note: each undeclared identifier is reported only once for each function it appears in lib/list-test.c:674:33: error: 'struct list_test_struct' has no member named 'head' 674 | list_traverse(cur, &head.head, list) { | ^ lib/list-test.c:674:40: error: 'list' undeclared (first use in this function) 674 | list_traverse(cur, &head.head, list) { | ^~~~ lib/list-test.c:674:45: error: expected ';' before '{' token 674 | list_traverse(cur, &head.head, list) { | ^~ | ; >> lib/list-test.c:662:45: warning: variable 'head' set but not used [-Wunused-but-set-variable] 662 | struct list_test_struct entries[5], head; | ^~~~ cc1: some warnings being treated as errors vim +/head +662 lib/list-test.c 659 660 static void list_test_list_traverse(struct kunit *test) 661 { > 662 struct list_test_struct entries[5], head; 663 int i = 0; 664 665 INIT_LIST_HEAD(&head.head); 666 667 for (i = 0; i < 5; ++i) { 668 entries[i].data = i; 669 list_add_tail(&entries[i].list, &head.head); 670 } 671 672 i = 0; 673 674 list_traverse(cur, &head.head, list) { 675 KUNIT_EXPECT_EQ(test, cur->data, i); 676 i++; 677 } 678 679 KUNIT_EXPECT_EQ(test, i, 5); 680 } 681 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org