#if HAVE_LIBIDN2
r = idn2_to_unicode_8z8z(label, &utf8, 0);
if (r != IDN2_OK)
- return log_error("Failed to undo IDNA: %s", idn2_strerror(r));
+ return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN),
+ "Failed to undo IDNA: %s", idn2_strerror(r));
assert(utf8_is_valid(utf8));
r = strlen(utf8);