From 67183d88ebe38e742f3a1131258e666fa2a87742 Mon Sep 17 00:00:00 2001
From: William Katz <qualitycontentquestionmark@gmail.com>
Date: Wed, 21 Jul 2021 23:00:24 -0700
Subject: [PATCH] :bug: when logs were empty .back() would seg fault

---
 src/bank.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bank.cpp b/src/bank.cpp
index ac609eb..a74eeb2 100644
--- a/src/bank.cpp
+++ b/src/bank.cpp
@@ -198,7 +198,7 @@ BankResponse Bank::PruneUsers(time_t threshold_time, uint32_t threshold_bal) noe
         if (users.erase_if(u.first, [threshold_time, threshold_bal, &deleted_count](User &u) -> bool
                            {
 #if MAX_LOG_SIZE > 0
-                               return (u.log.data.back().time < threshold_time && u.balance < threshold_bal);
+                    return ((u.log.data.size() ? (u.log.data.back().time < threshold_time) : true) && u.balance < threshold_bal);
 #else
                     return (u.balance < threshold_bal);
 #endif