guardrail

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@2622 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/examples/gras/pmm/pmm.c b/examples/gras/pmm/pmm.c
index 19b4d6d..ccd06b2 100755 (executable)
--- a/examples/gras/pmm/pmm.c
+++ b/examples/gras/pmm/pmm.c
@@ -101,6 +101,7 @@ int master (int argc,char *argv[]) {
   C = xbt_matrix_double_new_zeros(DATA_MATRIX_SIZE,DATA_MATRIX_SIZE);
        
   /* Create the connexions */
+  xbt_assert0(argc>1, "Usage: master <port>");
   gras_socket_server(atoi(argv[1]));
   peers=amok_pm_group_new("pmm");
   INFO0("Wait for peers for 10 sec");