From 2b9d2c726a41af6a8d4c09349a8c90c4881f54a6 Mon Sep 17 00:00:00 2001
From: Abduragim Shtanchaev <shtanchaev1994@gmail.com>
Date: Thu, 18 May 2023 16:17:57 +0300
Subject: [PATCH] add assert to check if layer input size is not empty

---
 modules/dnn/src/tensorflow/tf_graph_simplifier.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/dnn/src/tensorflow/tf_graph_simplifier.cpp b/modules/dnn/src/tensorflow/tf_graph_simplifier.cpp
index 25ef850417..2e8cde2799 100644
--- a/modules/dnn/src/tensorflow/tf_graph_simplifier.cpp
+++ b/modules/dnn/src/tensorflow/tf_graph_simplifier.cpp
@@ -815,6 +815,7 @@ void RemoveIdentityOps(tensorflow::GraphDef& net)
 
         if (type == "Identity" || type == "Dropout" || type == "PlaceholderWithDefault") {
             identity_ops_idx.push_back(li);
+            CV_Assert(layer.input_size() != 0);
             identity_ops[layer.name()] = layer.input(0);
         }
     }