The sendto() call in walk_tx() was passing NULL as the buffer argument, which can trigger a -Wnonnull warning with some compilers.
Although the size is 0 and no data is actually sent, passing a null pointer is technically incorrect.
This commit changes NULL to an empty string literal ("") to satisfy the non-null argument requirement and fix the compiler warning.
Signed-off-by: Wake Liu wakel@google.com --- tools/testing/selftests/net/psock_tpacket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c index 221270cee3ea..0c24adbb292e 100644 --- a/tools/testing/selftests/net/psock_tpacket.c +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -470,7 +470,7 @@ static void walk_tx(int sock, struct ring *ring)
bug_on(total_packets != 0);
- ret = sendto(sock, NULL, 0, 0, NULL, 0); + ret = sendto(sock, "", 0, 0, NULL, 0); if (ret == -1) { perror("sendto"); exit(1);