From 7009a16dea68a38029724e31694ffa0e7ba9b05e Mon Sep 17 00:00:00 2001
From: Gareth Francis <gfrancis.dev@gmail.com>
Date: Wed, 10 Apr 2024 19:30:29 +0100
Subject: [PATCH] RageUtil::UnicodeUpperLower: Prevent negative characters from
 segfaulting under GCC

---
 src/RageUtil.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/RageUtil.cpp b/src/RageUtil.cpp
index b331702f5c..8478a8bc41 100644
--- a/src/RageUtil.cpp
+++ b/src/RageUtil.cpp
@@ -1819,7 +1819,7 @@ void UnicodeUpperLower( wchar_t *p, std::size_t iLen, const unsigned char pMappi
 	wchar_t *pEnd = p + iLen;
 	while( p != pEnd )
 	{
-		if( *p < 256 )
+		if( *p >= 0 && *p < 256 )
 			*p = pMapping[*p];
 		++p;
 	}