From 0daf5f5723026f12e7855feae39aa548347834d8 Mon Sep 17 00:00:00 2001
From: Tobias Rehbein <tobias.rehbein@web.de>
Date: Thu, 1 Aug 2024 22:34:04 +0200
Subject: [PATCH] Handle empty waste cache gracefully

Apply the same defensive measure, we applied to specialists output
cache, to the waste cache.
---
 common/city.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common/city.cpp b/common/city.cpp
index 29feae2fac..c4757b1087 100644
--- a/common/city.cpp
+++ b/common/city.cpp
@@ -2878,7 +2878,8 @@ void set_city_production(struct city *pcity,
   {
     pcity->waste[o] =
         city_waste(pcity, o, pcity->prod[o] * pcity->bonus[o] / 100, nullptr,
-                   gov_centers, pcwaste ? &pcwaste->at(o) : nullptr);
+                   gov_centers,
+                   pcwaste && !pcwaste->empty() ? &pcwaste->at(o) : nullptr);
   }
   output_type_iterate_end;