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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dnn.cpp modules/dnn/src/dnn.cpp +3 -0

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--- a/modules/dnn/src/dnn.cpp
+++ b/modules/dnn/src/dnn.cpp
@@ -1265,12 +1265,15 @@ struct Net::Impl
                        ld.outputBlobsWrappers = layers[lpNext.lid].outputBlobsWrappers;

                        if ( preferableTarget == DNN_TARGET_OPENCL )
+                        {
+                            if ( !activData->consumers.empty() )
                            {
                                nextData = &layers[activData->consumers[0].lid];
                                lpNext = LayerPin(activData->consumers[0].lid, 0);
                            }
                        }
                    }
+                }

                // fuse convlution layer followed by eltwise + relu
                if ( preferableTarget == DNN_TARGET_OPENCL )