From d23602540f33bb6ff4c756062c2d0adf9ee93c0a Mon Sep 17 00:00:00 2001
From: al3w0f205 <miguel.alejandro.figueroa@gmail.com>
Date: Sun, 25 Oct 2026 23:22:59 -0500
Subject: [PATCH] test(libSceMbus): cover thread parameter reserved validation
 in sceDeviceServiceInitialize

---
 core/libs/tests/GuestMbus.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/libs/tests/GuestMbus.cpp b/core/libs/tests/GuestMbus.cpp
index 4050f1d452..29ef46dc7e 100644
--- a/core/libs/tests/GuestMbus.cpp
+++ b/core/libs/tests/GuestMbus.cpp
@@ -26,6 +26,11 @@ int main() {
     param.reserved = 1;
     Require(sceDeviceServiceInitialize(3, &param) == invalidArgument, "reserved field accepted");
     param.reserved = 0;
+    DeviceServiceThreadParam threadParam{};
+    threadParam.reserved = 1;
+    param.threadParam = &threadParam;
+    Require(sceDeviceServiceInitialize(3, &param) == invalidArgument, "threadParam reserved field accepted");
+    param.threadParam = nullptr;
     Require(sceDeviceServiceInitialize(3, &param) == 0, "default parameter initialization failed");
     Require(sceDeviceServiceInitialize(3, 0) == 0, "initialization failed");
     Require(sceDeviceServiceGetGeneration() == 0, "the device set started at another generation");