* examples/extexi: Restore the #line generation.

[bison.git] / m4 / cxx.m4

diff --git a/m4/cxx.m4 b/m4/cxx.m4
index 1d17e8361c10fbc32504f5a5be28cc6abf67b5ea..210833f672e2da5c396a4978e00e5c93599a0284 100644 (file)
--- a/m4/cxx.m4
+++ b/m4/cxx.m4
@@ -15,8 +15,8 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307  USA
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301  USA
 
 # Written by Paul Eggert <eggert@cs.ucla.edu>.
 
@@ -29,7 +29,8 @@ AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER],
       [AC_LANG_PROGRAM(
         [#include <iostream>
          using namespace std;],
-         [cout << "";])],
+         [std::cerr << "";
+          cout << "";])],
       [bison_cv_cxx_works=yes],
       [bison_cv_cxx_works=no],
       [bison_cv_cxx_works=cross])