From a9670e15843c06b3bacdc661bd3666d402df09df Mon Sep 17 00:00:00 2001
From: Alexander Neben <alexander.neben@mongodb.com>
Date: Thu, 21 Jul 2022 15:22:49 +0000
Subject: SERVER-67133 Debug mode fixes

---
 src/mongo/base/dependency_graph.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/mongo/base')

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);
-- 
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