From 32f99b62b6931a2a6c081cddcb040eabb863dd21 Mon Sep 17 00:00:00 2001
From: IoI_xD <alphaproject217@gmail.com>
Date: Tue, 14 Apr 2026 19:51:52 -0700
Subject: [PATCH] have MwStringIsKeyUTF8 not use ub

---
 src/string.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/string.c b/src/string.c
index 943867a..2a15046 100644
--- a/src/string.c
+++ b/src/string.c
@@ -51,9 +51,18 @@ void MwStringPrintIntoBuffer(char* out, MwU32 size, const char* fmt, ...) {
 };
 
 MWDECL MwBool MwStringIsKeyUTF8(MwU32 key) {
-	unsigned char bytes[sizeof(MwU32) * 16];
-	int	      i;
-	memcpy(bytes, &key, sizeof(MwU32));
+	/* little endian */
+#if defined(__x86_64__) || defined(_M_X64) || defined(__i386) || defined(_M_IX86) || defined(__aarch64__) || defined(_M_ARM64)
+	unsigned char bytes[4] = {
+	    (key & 0x000000FF),
+	    (key & 0x0000FF00) >> 8,
+	    (key & 0x00FF0000) >> 16,
+	    (key & 0xFF000000) >> 24,
+	};
+#else
+#error Unspecified architecture! This error exists here because above it is endian-specific code. Add your architecture above.
+#endif
+	int i;
 
 	for(i = 0; i < sizeof(MwU32); i++) {
 		if(( // ASCII