--- origsrc/libopenmpt-0.7.3+release.autotools/src/mpt/string_transcode/transcode.hpp	2023-04-11 18:17:44.000000000 +0900
+++ src/libopenmpt-0.7.3+release.autotools/src/mpt/string_transcode/transcode.hpp	2023-09-22 01:18:13.564555400 +0900
@@ -1663,7 +1663,7 @@ inline Tdststring encode(logical_encodin
 #elif !defined(MPT_COMPILER_QUIRK_NO_WCHAR)
 	switch (encoding) {
 		case logical_encoding::locale:
-			return encode_locale<Tdststring>(std::locale(""), src);
+			return encode_locale<Tdststring>(std::locale("C"), src);
 			break;
 		case logical_encoding::active_locale:
 			return encode_locale<Tdststring>(std::locale(), src);
@@ -1834,7 +1834,7 @@ inline mpt::widestring decode(logical_en
 #elif !defined(MPT_COMPILER_QUIRK_NO_WCHAR)
 	switch (encoding) {
 		case logical_encoding::locale:
-			return decode_locale(std::locale(""), src);
+			return decode_locale(std::locale("C"), src);
 			break;
 		case logical_encoding::active_locale:
 			return decode_locale(std::locale(), src);