check vector emptiness before access it

Signed-off-by: Li Peng <peng.li@intel.com>

check vector emptiness before access it
Signed-off-by: Li Peng <peng.li@intel.com>
c43498c6 · Li Peng · 389fa5d3 · c43498c6
Commit c43498c6 authored Feb 06, 2018 by Li Peng
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Showing with 5 additions and 2 deletions

dnn.cpp modules/dnn/src/dnn.cpp +5 -2

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--- a/modules/dnn/src/dnn.cpp
+++ b/modules/dnn/src/dnn.cpp
@@ -1266,8 +1266,11 @@ struct Net::Impl
                        if ( preferableTarget == DNN_TARGET_OPENCL )
                        {
-                            nextData = &layers[activData->consumers[0].lid];
+                            if ( !activData->consumers.empty() )
-                            lpNext = LayerPin(activData->consumers[0].lid, 0);
+                            {
+                                nextData = &layers[activData->consumers[0].lid];
+                                lpNext = LayerPin(activData->consumers[0].lid, 0);
+                            }
                        }
                    }
                }