-# serial 8
+# serial 9
# From Paul Eggert.
# (at least glibc-2.1.3) because the "_XOPEN_SOURCE 500" definition elicits
# a syntax error in wchar.h due to the use of undefined __int32_t.
-AC_DEFUN(AC_MBSTATE_T,
+AC_DEFUN([AC_MBSTATE_T],
[
AC_CHECK_HEADERS(stdlib.h)