From 85180a51f07946872308ee3e4d18d9daaaed983b Mon Sep 17 00:00:00 2001
From: Maurice Heumann <mauriceheumann@gmail.com>
Date: Tue, 4 Feb 2025 20:43:43 +0100
Subject: [PATCH] Prevent destroying active thread

---
 src/windows-emulator/syscalls.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/windows-emulator/syscalls.cpp b/src/windows-emulator/syscalls.cpp
index e97e51fb..7df12fd7 100644
--- a/src/windows-emulator/syscalls.cpp
+++ b/src/windows-emulator/syscalls.cpp
@@ -430,6 +430,16 @@ namespace
             return STATUS_SUCCESS;
         }
 
+        if (h.value.type == handle_types::thread)
+        {
+            const auto t = c.proc.threads.get(h);
+            if (t == c.proc.active_thread && t->ref_count == 1)
+            {
+                // TODO: Better handle ref counting
+                return STATUS_SUCCESS;
+            }
+        }
+
         auto* handle_store = get_handle_store(c.proc, h);
         if (handle_store && handle_store->erase(h))
         {