From 40e126a35f9acf6fae1cc4404720f290df2d6885 Mon Sep 17 00:00:00 2001
From: PJB3005 <pieterjan.briers+git@gmail.com>
Date: Thu, 12 Mar 2026 12:46:54 +0100
Subject: [PATCH] Make JKRAramPiece trap on invalid pointers

---
 libs/JSystem/src/JKernel/JKRAramPiece.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libs/JSystem/src/JKernel/JKRAramPiece.cpp b/libs/JSystem/src/JKernel/JKRAramPiece.cpp
index f01b530cfe..0946275b83 100644
--- a/libs/JSystem/src/JKernel/JKRAramPiece.cpp
+++ b/libs/JSystem/src/JKernel/JKRAramPiece.cpp
@@ -27,6 +27,10 @@ JSUList<JKRAMCommand> JKRAramPiece::sAramPieceCommandList;
 
 OSMutex JKRAramPiece::mMutex;
 
+#if DEBUG && TARGET_PC
+volatile u8 forceRead;
+#endif
+
 JKRAMCommand* JKRAramPiece::orderAsync(int direction, uintptr_t source, uintptr_t destination, u32 length,
                                        JKRAramBlock* block, JKRAMCommand::AsyncCallback callback) {
     lock();
@@ -45,6 +49,12 @@ JKRAMCommand* JKRAramPiece::orderAsync(int direction, uintptr_t source, uintptr_
         JKRAramPiece::prepareCommand(direction, source, destination, length, block, callback);
     message->setting(1, command);
 
+#if DEBUG && TARGET_PC
+    if (direction == ARAM_DIR_MRAM_TO_ARAM) {
+        forceRead = *reinterpret_cast<u8*>(source);
+    }
+#endif
+
     OSSendMessage(&JKRAram::sMessageQueue, message, OS_MESSAGE_BLOCK);
     if (command->mCallback != NULL) {
         sAramPieceCommandList.append(&command->mPieceLink);