On Tue, Oct 21, 2025 at 06:54:33PM +0200, Alessandro Zanni wrote:

Fix to avoid the usage of the `ret` variable uninitialized in the following macro expansions.

It solves the following warning:

In file included from netlink-dumps.c:21: netlink-dumps.c: In function ‘dump_extack’: ../kselftest_harness.h:788:35: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 788 | intmax_t __exp_print = (intmax_t)__exp; \ | ^~~~~~~~~~~ ../kselftest_harness.h:631:9: note: in expansion of macro ‘__EXPECT’ 631 | __EXPECT(expected, #expected, seen, #seen, ==, 0) | ^~~~~~~~ netlink-dumps.c:169:9: note: in expansion of macro ‘EXPECT_EQ’ 169 | EXPECT_EQ(ret, FOUND_EXTACK); | ^~~~~~~~~

The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=net

Signed-off-by: Alessandro Zanni alessandro.zanni87@gmail.com

tools/testing/selftests/net/netlink-dumps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c index 7618ebe528a4..8ebb8b1b9c5c 100644 --- a/tools/testing/selftests/net/netlink-dumps.c +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -112,7 +112,7 @@ static const struct { TEST(dump_extack) { int netlink_sock;

• int i, cnt, ret;

• int i, cnt, ret = 0;

Hi Alessandro,

I suggest moving this line so that reverse xmas tree order - longest line to shortest - is preserved.

char buf[8192]; int one = 1; ssize_t n; -- 2.43.0