From 6fa2f2abc1f3b8c071c0fba032b25e6959f28de3 Mon Sep 17 00:00:00 2001
From: Jan <jsteemann@users.noreply.github.com>
Date: Mon, 4 Nov 2019 22:52:45 +0100
Subject: [PATCH] added an assert (#10358)

---
 arangod/Aql/Expression.cpp     | 1 +
 arangod/Aql/OptimizerRules.cpp | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arangod/Aql/Expression.cpp b/arangod/Aql/Expression.cpp
index 8231ff3421..eaf6752c77 100644
--- a/arangod/Aql/Expression.cpp
+++ b/arangod/Aql/Expression.cpp
@@ -1621,6 +1621,7 @@ bool Expression::canRunOnDBServer() {
   TRI_ASSERT(_node != nullptr);
   return _node->canRunOnDBServer();
 }
+
 bool Expression::isDeterministic() {
   if (_type == UNPROCESSED) {
     initExpression();
diff --git a/arangod/Aql/OptimizerRules.cpp b/arangod/Aql/OptimizerRules.cpp
index f0f12f091e..53ef0a83fc 100644
--- a/arangod/Aql/OptimizerRules.cpp
+++ b/arangod/Aql/OptimizerRules.cpp
@@ -7253,10 +7253,12 @@ void arangodb::aql::moveFiltersIntoEnumerateRule(Optimizer* opt, std::unique_ptr
         if (!expr->isDeterministic() || !expr->canRunOnDBServer()) {
           break;
         }
+
         if (expr->node() == nullptr) {
           break;
         }
 
+        TRI_ASSERT(!expr->willUseV8());
         found.clear();
         Ast::getReferencedVariables(expr->node(), found);
         if (found.size() == 1 && found.find(outVariable) != found.end()) {