1 files changed, 4 insertions, 0 deletions
diff --git a/src/coins.h b/src/coins.h
index d39ebf9062..482e233e8c 100644
--- a/src/coins.h
+++ b/src/coins.h
@@ -294,6 +294,10 @@ public:
     bool HaveInputs(const CTransaction& tx) const;
 
 private:
+    /**
+     * @note this is marked const, but may actually append to `cacheCoins`, increasing
+     * memory usage.
+     */
     CCoinsMap::iterator FetchCoin(const COutPoint &outpoint) const;
 };