Fixed issue with json output in vpp_api_test.

[vpp.git] / vpp-api-test / vat / api_format.c

diff --git a/vpp-api-test/vat/api_format.c b/vpp-api-test/vat/api_format.c
index 0c0a65e..b6f0902 100644 (file)
--- a/vpp-api-test/vat/api_format.c
+++ b/vpp-api-test/vat/api_format.c
@@ -2428,7 +2428,8 @@ int exec (vat_main_t * vam)
     while (vat_time_now (vam) < timeout) {
         if (vam->result_ready == 1) {
             u8 * free_me;
-            fformat (vam->ofp, "%s", vam->shmem_result);
+            if (vam->shmem_result != NULL)
+                fformat (vam->ofp, "%s", vam->shmem_result);
             pthread_mutex_lock (&am->vlib_rp->mutex);
             oldheap = svm_push_data_heap (am->vlib_rp);