From 83569ae66b69c547af5d9ec53e05c2979d142c07 Mon Sep 17 00:00:00 2001
From: Exzap <13877693+Exzap@users.noreply.github.com>
Date: Wed, 30 Oct 2024 02:41:43 +0100
Subject: [PATCH] PPCRec: Avoid relying on undefined behavior in
 std::copy_backwards

---
 src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp b/src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp
index cb61fecf..f2cf173a 100644
--- a/src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp
+++ b/src/Cafe/HW/Espresso/Recompiler/IML/IMLOptimizer.cpp
@@ -611,7 +611,8 @@ sint32 IMLUtil_MoveInstructionTo(IMLSegment& seg, sint32 initialIndex, sint32 ta
 	{
 		cemu_assert_debug(targetIndex > 0);
 		targetIndex--;
-		std::copy_backward(seg.imlList.begin() + initialIndex + 1, seg.imlList.begin() + targetIndex + 1, seg.imlList.begin() + targetIndex);
+		for(size_t i=initialIndex; i<targetIndex; i++)
+			seg.imlList[i] = seg.imlList[i+1];
 		seg.imlList[targetIndex] = temp;
 		return targetIndex;
 	}