From d932d747d1b1c6440bd3105a0e8d2f84a1f0742d Mon Sep 17 00:00:00 2001
From: Duncan Ogilvie <mr.exodia.tpodt@gmail.com>
Date: Wed, 5 Aug 2026 00:03:35 +0200
Subject: [PATCH] Unlock breakpoint lock for access violation/guard page custom
 handlers

Cleaner implementation of #40, credit to @linsmod for finding the bug
---
 TitanEngine/TitanEngine.Debugger.DebugLoop.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/TitanEngine/TitanEngine.Debugger.DebugLoop.cpp b/TitanEngine/TitanEngine.Debugger.DebugLoop.cpp
index 9f92bd0..34e1847 100644
--- a/TitanEngine/TitanEngine.Debugger.DebugLoop.cpp
+++ b/TitanEngine/TitanEngine.Debugger.DebugLoop.cpp
@@ -1193,6 +1193,9 @@ __declspec(dllexport) void TITCALL DebugLoop()
                 // Debuggee generated the GUARD_PAGE or ACCESS_VIOLATION exception
                 if(DBGCode == DBG_EXCEPTION_NOT_HANDLED)
                 {
+                    // User callbacks may block while another thread calls an API that takes this lock.
+                    breakpointLock.unlock();
+
                     if(isAccessViolation)
                     {
                         if(DBGCustomHandler->chAccessViolation != NULL)