From 48db31c5cf6f347c973f5409b9fa64863170eea0 Mon Sep 17 00:00:00 2001
From: Andre Puschmann <andre@softwareradiosystems.com>
Date: Thu, 25 Jun 2020 21:51:17 +0200
Subject: [PATCH] rlc_stress_test: fix random PDU dropping

the rand() was sometimes giving NaN so this case needs to be handled
and the PDU not dropped to have real zero drop-rate
---
 lib/test/upper/rlc_stress_test.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/test/upper/rlc_stress_test.cc b/lib/test/upper/rlc_stress_test.cc
index e0ccdf715..0262c6839 100644
--- a/lib/test/upper/rlc_stress_test.cc
+++ b/lib/test/upper/rlc_stress_test.cc
@@ -230,7 +230,8 @@ private:
       unique_byte_buffer_t& pdu = *it;
 
       // Drop
-      if (((real_dist(mt19937) > args.pdu_drop_rate) || skip_action) && pdu->N_bytes > 0) {
+      float rnd = real_dist(mt19937);
+      if (std::isnan(rnd) || (((rnd > args.pdu_drop_rate) || skip_action) && pdu->N_bytes > 0)) {
         uint32_t pdu_len = pdu->N_bytes;
 
         // Cut