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-rw-r--r--src/pnoc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/pnoc.c b/src/pnoc.c
index 0bfacad..387f127 100644
--- a/src/pnoc.c
+++ b/src/pnoc.c
@@ -1,4 +1,5 @@
#include "pnoc.h"
+#include <assert.h>
#include <stdlib.h>
static int pnoc_comparator(const void *a, const void *b)
@@ -11,5 +12,7 @@ static int pnoc_comparator(const void *a, const void *b)
void pnoc_sort(pnoc_t pnoc[], const uint8_t num_tuples)
{
+ assert(pnoc != NULL);
+
qsort(pnoc, num_tuples, sizeof(pnoc_t), pnoc_comparator);
}