From 3110dc94c1b399a25c9fc856c8dc3e2382dcc801 Mon Sep 17 00:00:00 2001
From: lianghuikang <505519763@qq.com>
Date: Sat, 3 Jul 2021 11:29:02 +0800
Subject: [PATCH] fix core dump

---
 tf_adapter/optimizers/control_flow_conversion_pass.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tf_adapter/optimizers/control_flow_conversion_pass.cc b/tf_adapter/optimizers/control_flow_conversion_pass.cc
index 0f1e33c2a..c6d7c9afe 100644
--- a/tf_adapter/optimizers/control_flow_conversion_pass.cc
+++ b/tf_adapter/optimizers/control_flow_conversion_pass.cc
@@ -69,6 +69,7 @@ Status ControlFlowConversionPass::Run(const GraphOptimizationPassOptions &option
   // Delete _lower_using_switch_merge before LowerFunctionalOpsPass
   for (int i = 2; i < graph->num_node_ids(); ++i) {
     Node *n = graph->FindNodeId(i);
+    if (n == nullptr) { continue; }
     if (n->IsIfNode() || n->type_string() == "Case" || n->IsWhileNode()) { n->ClearAttr(kLowerUsingSwitchMergeAttr); }
   }
 
-- 
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