From df50320ca637cbf337c731c957034c5fac598e99 Mon Sep 17 00:00:00 2001
From: DizzyEggg <jajkodizzy@wp.pl>
Date: Sat, 25 Jan 2025 17:38:19 +0100
Subject: [PATCH] Fix Crash if something costs 0 in shop (#6106)

---
 src/shop.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/shop.c b/src/shop.c
index a343bab0d3..effb638984 100644
--- a/src/shop.c
+++ b/src/shop.c
@@ -1066,7 +1066,11 @@ static void Task_BuyHowManyDialogueInit(u8 taskId)
     BuyMenuPrintItemQuantityAndPrice(taskId);
     ScheduleBgCopyTilemapToVram(0);
 
-    maxQuantity = GetMoney(&gSaveBlock1Ptr->money) / sShopData->totalCost;
+    // Avoid division by zero in-case something costs 0 pokedollars.
+    if (sShopData->totalCost == 0)
+        maxQuantity = MAX_BAG_ITEM_CAPACITY;
+    else
+        maxQuantity = GetMoney(&gSaveBlock1Ptr->money) / sShopData->totalCost;
 
     if (maxQuantity > MAX_BAG_ITEM_CAPACITY)
         sShopData->maxQuantity = MAX_BAG_ITEM_CAPACITY;