gras: input fail safety check for msgs only ports

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/task_fail.cpp b/lib/task_fail.cpp
index 415c13b..061ee9a 100644
--- a/lib/task_fail.cpp
+++ b/lib/task_fail.cpp
@@ -33,7 +33,7 @@ void BlockActor::input_fail(const size_t i)
     }
 
     //check that the input is not already maxed
-    if (data->input_queues.is_front_maximal(i))
+    if (not data->input_queues.empty(i) and data->input_queues.is_front_maximal(i))
     {
         throw std::runtime_error("input_fail called on maximum_items buffer in " + name);
     }