[ovs-dev] [PATCH 3/6] dpctl: Skip invoking qsort on empty list

[Bhanuprakash Bodireddy]

Clang reports "Argument with 'nonnull' attribute passed null" warning.

Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodireddy at intel.com>
---
 lib/dpctl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/dpctl.c b/lib/dpctl.c
index 7f44d02..2ad475b 100644
--- a/lib/dpctl.c
+++ b/lib/dpctl.c
@@ -555,7 +555,9 @@ show_dpif(struct dpif *dpif, struct dpctl_params *dpctl_p)
         n_port_nos++;
     }
 
-    qsort(port_nos, n_port_nos, sizeof *port_nos, compare_port_nos);
+    if (port_nos) {
+        qsort(port_nos, n_port_nos, sizeof *port_nos, compare_port_nos);
+    }
 
     for (int i = 0; i < n_port_nos; i++) {
         if (dpif_port_query_by_number(dpif, port_nos[i], &dpif_port)) {
-- 
2.4.11