Never call qsort on potentially NULL arrays

[elogind.git] / src / shared / cgroup-show.c

diff --git a/src/shared/cgroup-show.c b/src/shared/cgroup-show.c
index e971f36190e216300e9641dec89bc95744265473..cc44ab4ea9ca1700135360cede64eb756f925ce9 100644 (file)
--- a/src/shared/cgroup-show.c
+++ b/src/shared/cgroup-show.c
@@ -44,6 +44,8 @@ static void show_pid_array(int pids[], unsigned n_pids, const char *prefix, unsi
         unsigned i, m, pid_width;
         pid_t biggest = 0;
 
+        assert(n_pids > 0);
+
         /* Filter duplicates */
         m = 0;
         for (i = 0; i < n_pids; i++) {