Index: src/support/win32/locale_win32.cpp
===================================================================
--- src/support/win32/locale_win32.cpp
+++ src/support/win32/locale_win32.cpp
@@ -93,7 +93,9 @@
     va_list ap;
     va_start( ap, format );
 #if defined(_LIBCPP_MSVCRT)
-    int result = _vsnprintf_l( ret, n, format, loc, ap );
+    int result = __stdio_common_vsprintf(
+        _CRT_INTERNAL_LOCAL_PRINTF_OPTIONS | _CRT_INTERNAL_PRINTF_STANDARD_SNPRINTF_BEHAVIOR,
+        ret, n, format, loc, ap);
 #else
     int result = vsnprintf( ret, n, format, ap );
 #endif