From c1ae637fa7d6d152a4a52fadb8055b3ec59f4606 Mon Sep 17 00:00:00 2001
From: NewSoupVi <57900059+NewSoupVi@users.noreply.github.com>
Date: Tue, 15 Jul 2025 20:32:53 +0200
Subject: [PATCH] Core: Crash on full accessibility if there are unreachable
 locations (Yes, you read that right) #3787

---
 BaseClasses.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/BaseClasses.py b/BaseClasses.py
index dbcd65ab..ef0fa10e 100644
--- a/BaseClasses.py
+++ b/BaseClasses.py
@@ -706,6 +706,12 @@ class MultiWorld():
                     sphere.append(locations.pop(n))
 
             if not sphere:
+                if __debug__:
+                    from Fill import FillError
+                    raise FillError(
+                        f"Could not access required locations for accessibility check. Missing: {locations}",
+                        multiworld=self,
+                    )
                 # ran out of places and did not finish yet, quit
                 logging.warning(f"Could not access required locations for accessibility check."
                                 f" Missing: {locations}")