From 37215238100605c3f1cf81369640cb6226e2a70c Mon Sep 17 00:00:00 2001
From: Francisco <francisco.paisana@softwareradiosystems.com>
Date: Sun, 10 Oct 2021 19:45:04 +0100
Subject: [PATCH] pdcp,lte: fix debug logging in PDCP, to avoid segmentation
 fault and crash

---
 lib/src/pdcp/pdcp_entity_lte.cc | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/src/pdcp/pdcp_entity_lte.cc b/lib/src/pdcp/pdcp_entity_lte.cc
index d4be424e1..017b45123 100644
--- a/lib/src/pdcp/pdcp_entity_lte.cc
+++ b/lib/src/pdcp/pdcp_entity_lte.cc
@@ -472,10 +472,14 @@ void pdcp_entity_lte::update_rx_counts_queue(uint32_t rx_count)
       rx_counts_info.pop_back();
       fmc++;
     }
-    logger.debug("Queue too large. Updating. New FMC=%d, new back=%d, new queue_size=%zu",
-                 fmc,
-                 rx_counts_info.back(),
-                 rx_counts_info.size());
+    if (not rx_counts_info.empty()) {
+      logger.debug("Queue too large. Updating. New FMC=%d, new back=%d, new queue_size=%zu",
+                   fmc,
+                   rx_counts_info.back(),
+                   rx_counts_info.size());
+    } else {
+      logger.debug("Queue too large. Updating. New FMC=%d, new queue_size=%zu", fmc, rx_counts_info.size());
+    }
   }
 
   if (rx_counts_info.empty()) {