The variable user in struct iscsi_url is a character array, not a pointer. Therefore its address will never be NULL.
clang reports this error: block/iscsi.c:1329:20: warning: comparison of array 'iscsi_url->user' not equal to a null pointer is always true [-Wtautological-pointer-compare] Signed-off-by: Stefan Weil <s...@weilnetz.de> --- This error also exists in libscsi. See my pull request https://github.com/sahlberg/libiscsi/pull/146 Cheers Stefan block/iscsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/iscsi.c b/block/iscsi.c index 1fa855a..a2bd70a 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1326,7 +1326,7 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags, goto out; } - if (iscsi_url->user != NULL) { + if (iscsi_url->user[0] != '\0') { ret = iscsi_set_initiator_username_pwd(iscsi, iscsi_url->user, iscsi_url->passwd); if (ret != 0) { -- 2.1.4