$OpenBSD: patch-base_string_util_posix_h,v 1.2 2011/02/08 09:43:02 espie Exp $
--- base/string_util_posix.h.orig	Fri Jan 21 10:20:15 2011
+++ base/string_util_posix.h	Mon Jan 24 00:01:36 2011
@@ -45,7 +45,12 @@ inline int strncmp16(const char16* s1, const char16* s
 inline int vswprintf(wchar_t* buffer, size_t size,
                      const wchar_t* format, va_list arguments) {
   DCHECK(IsWprintfFormatPortable(format));
+#if defined(OS_OPENBSD)
+  // OpenBSD does not have a wide-char equivalent
+  return ::vsnprintf((char *)buffer, size, (const char *)format, arguments);
+#else
   return ::vswprintf(buffer, size, format, arguments);
+#endif
 }
 
 }  // namespace base