Make an error message a bit more explicit about the most probable error cause

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/simgrid/simgrid/trunk@5426 48e7efb5-ca39-0410-a469-dd3cf9ba447f

diff --git a/src/gras/Msg/gras_msg_exchange.c b/src/gras/Msg/gras_msg_exchange.c
index 8d40258..bb894e0 100644 (file)
--- a/src/gras/Msg/gras_msg_exchange.c
+++ b/src/gras/Msg/gras_msg_exchange.c
@@ -441,7 +441,7 @@ gras_msg_handle(double timeOut) {
                 "AND IN SIMGRID (process wasn't killed by an assert)",msg.type->name);
     if (!ran_ok)
       THROW1(mismatch_error,0,
-            "Message '%s' refused by all registered callbacks", msg.type->name);
+            "Message '%s' refused by all registered callbacks (maybe your callback misses a 'return 0' at the end)", msg.type->name);
     /* FIXME: gras_datadesc_free not implemented => leaking the payload */
     break;