From 89af2b225e64b336bf06af798fd4024e053a8c3e Mon Sep 17 00:00:00 2001
From: MarcZX10 <67475268+MarcZX10@users.noreply.github.com>
Date: Sun, 25 Oct 2026 11:31:48 +0000
Subject: [PATCH] test(libSceConvertKeycode): check the keyboard type lookup at
 both int32 limits at compile time

LookUp is constexpr, so static_assert evaluates it for INT32_MIN and INT32_MAX in a constant expression, where signed overflow is an error. With the previous 32-bit subtraction the test file no longer compiles ('overflow in constant expression'); the existing runtime case for 0x80000000 only showed the overflow under UBSan.
---
 core/libs/tests/GuestConvertKeycode.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/libs/tests/GuestConvertKeycode.cpp b/core/libs/tests/GuestConvertKeycode.cpp
index 8bf7b815b0..d2d3cb463f 100644
--- a/core/libs/tests/GuestConvertKeycode.cpp
+++ b/core/libs/tests/GuestConvertKeycode.cpp
@@ -15,6 +15,9 @@
 
 static void Require(bool value) { if (!value) std::abort(); }
 
+static_assert(ImeKeyboardType::LookUp(INT32_MIN, 0, 0) == 0);
+static_assert(ImeKeyboardType::LookUp(INT32_MAX, 0, 0) == 0);
+
 static void SetLanguage(const char* value) {
 #ifdef _WIN32
     Require(_putenv_s("ANYPS5_LANGUAGE", value != nullptr ? value : "") == 0);