SERVER-67133 Debug mode fixes

1 files changed, 3 insertions, 0 deletions

diff --git a/src/mongo/base/dependency_graph.cpp b/src/mongo/base/dependency_graph.cpp
index 8d9107b5a10..612fcbc7d3d 100644
--- a/src/mongo/base/dependency_graph.cpp
+++ b/src/mongo/base/dependency_graph.cpp
@@ -105,6 +105,9 @@ std::vector<std::string> DependencyGraph::topSort(std::vector<std::string>* cycl
     // Swap the pointers in the `elements` vector that point to `a` and `b`.
     // Update their 'membership' data members to reflect the change.
     auto swapPositions = [](Element& a, Element& b) {
+        if (&a == &b) {
+            return;
+        }
         using std::swap;
         swap(*a.membership, *b.membership);
         swap(a.membership, b.membership);