else
AC_CACHE_CHECK([whether strchrnul works],
[gl_cv_func_strchrnul_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <string.h> /* for strchrnul */
]], [[const char *buf = "a";
else
AC_CACHE_CHECK([whether strchrnul works],
[gl_cv_func_strchrnul_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <string.h> /* for strchrnul */
]], [[const char *buf = "a";