in topologicalSort check for valid iterator

2018-10-04 00:33:19 +02:00
parent 9fe21eabb0
commit 25c7b1e9be
1 changed files with 2 additions and 1 deletions
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -2408,7 +2408,8 @@ std::vector<App::DocumentObject*> DocumentP::topologicalSort(const std::vector<A

        for (auto outListIt : out) {
            auto outListMapIt = countMap.find(outListIt);
-            outListMapIt->second = outListMapIt->second - 1;
+            if (outListMapIt != countMap.end())
+                outListMapIt->second = outListMapIt->second - 1;
        }
        ret.push_back(rootObjeIt->first);