clean up modification blocks

arangodb · jsteemann · Sep 11, 2018 · Sep 4, 2018 · Sep 5, 2018 · Sep 5, 2018
commit f5bd64f8710792e1dc8da6cf934fe1a0686917c1
diff --git a/arangod/Aql/ExecutionBlock.cpp b/arangod/Aql/ExecutionBlock.cpp
@@ -293,6 +293,7 @@ void ExecutionBlock::returnBlockUnlessNull(AqlItemBlock*& block) {
 void ExecutionBlock::inheritRegisters(AqlItemBlock const* src,
                                       AqlItemBlock* dst, size_t srcRow,
                                       size_t dstRow) {
+  TRI_ASSERT(src != nullptr);
   RegisterId const n = src->getNrRegs();
   auto planNode = getPlanNode();