From dd745e9728842b789fd8dbf947683e7a1b0fd623 Mon Sep 17 00:00:00 2001
From: MarcelineVQ <marcythevq@gmail.com>
Date: Thu, 26 Mar 2026 23:10:35 -0700
Subject: [PATCH] fix: guard getObjectByGUID against NULL object manager

Crash during world teardown when minimap hooks call into WoW's
FindObjectByGUID while the object manager at 0xB41414 is already NULL.
---
 src/wow.zig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/wow.zig b/src/wow.zig
index ffdefea..aca4b9b 100644
--- a/src/wow.zig
+++ b/src/wow.zig
@@ -201,6 +201,7 @@ pub fn unitGUID(unit_id: [*:0]const u8) u64 {
 /// Resolve a GUID → object pointer via the object manager hash table.
 pub fn getObjectByGUID(guid: u64) u32 {
     if (guid == 0) return 0;
+    if (hook.readMem(u32, o.OBJECT_MANAGER_PTR) == 0) return 0;
     const lo: u32 = @truncate(guid);
     const hi: u32 = @truncate(guid >> 32);
     const result = hook.call(fn (u32, u32) callconv(hook.cc.stdcall) u32, o.FN_GET_OBJECT_BY_GUID, .{ lo, hi });
@@ -212,6 +213,7 @@ pub fn getObjectByGUID(guid: u64) u32 {
 /// Split-GUID variant for callers that already have lo/hi parts.
 pub fn getObjectByGUIDSplit(guid_lo: u32, guid_hi: u32) u32 {
     if (guid_lo == 0 and guid_hi == 0) return 0;
+    if (hook.readMem(u32, o.OBJECT_MANAGER_PTR) == 0) return 0;
     return hook.call(fn (u32, u32) callconv(hook.cc.stdcall) u32, o.FN_GET_OBJECT_BY_GUID, .{ guid_lo, guid_hi });
 }