1 files changed, 23 insertions, 1 deletions
diff --git a/src/armnn/test/TestUtils.cpp b/src/armnn/test/TestUtils.cpp
index 6020c7631c..97cc80c8a2 100644
--- a/src/armnn/test/TestUtils.cpp
+++ b/src/armnn/test/TestUtils.cpp
@@ -15,7 +15,29 @@ void Connect(armnn::IConnectableLayer* from, armnn::IConnectableLayer* to, const
     ARMNN_ASSERT(from);
     ARMNN_ASSERT(to);
 
-    from->GetOutputSlot(fromIndex).Connect(to->GetInputSlot(toIndex));
+    try
+    {
+        from->GetOutputSlot(fromIndex).Connect(to->GetInputSlot(toIndex));
+    }
+    catch (const std::out_of_range& exc)
+    {
+        std::ostringstream message;
+
+        if (to->GetType() == armnn::LayerType::FullyConnected && toIndex == 2)
+        {
+            message << "Tried to connect bias to FullyConnected layer when bias is not enabled: ";
+        }
+
+        message << "Failed to connect to input slot "
+                << toIndex
+                << " on "
+                << GetLayerTypeAsCString(to->GetType())
+                << " layer "
+                << std::quoted(to->GetName())
+                << " as the slot does not exist or is unavailable";
+        throw LayerValidationException(message.str());
+    }
+
     from->GetOutputSlot(fromIndex).SetTensorInfo(tensorInfo);
 }