[AC_CACHE_CHECK(whether utimes accepts a null argument, ac_cv_func_utimes_null,
[rm -f conftest.data; > conftest.data
AC_TRY_RUN([
[AC_CACHE_CHECK(whether utimes accepts a null argument, ac_cv_func_utimes_null,
[rm -f conftest.data; > conftest.data
AC_TRY_RUN([