SERVER-63476 Remove extra ellipsis in function_ref impl

2 files changed, 26 insertions, 2 deletions

diff --git a/src/mongo/util/functional.h b/src/mongo/util/functional.h
index 0a9d5d4024d..9f353343b69 100644
--- a/src/mongo/util/functional.h
+++ b/src/mongo/util/functional.h
@@ -94,9 +94,9 @@ public:
             if constexpr (std::is_void_v<RetType>) {
                 // Implicitly ignore the return. This avoids issues if func() returns a value,
                 // while ensuring we still get a warning if the value is [[nodiscard]].
-                (*func)(std::forward<Args...>(args)...);
+                (*func)(std::forward<Args>(args)...);
             } else {
-                return (*func)(std::forward<Args...>(args)...);
+                return (*func)(std::forward<Args>(args)...);
             }
         };
     }
diff --git a/src/mongo/util/functional_test.cpp b/src/mongo/util/functional_test.cpp
index 5953e34a080..eaf43122b0f 100644
--- a/src/mongo/util/functional_test.cpp
+++ b/src/mongo/util/functional_test.cpp
@@ -186,6 +186,30 @@ TEST(FunctionRefTest, returns_value) {
     ASSERT_EQ(mongo::function_ref<int()>([] { return 42; })(), 42);
 }
 
+TEST(UniqueFunctionTest, takes_arguments) {
+    RunDetection<0> runDetection;
+
+    mongo::unique_function<void(int, int)>([](int a, int b) {
+        ASSERT_EQ(a, 1);
+        ASSERT_EQ(b, 2);
+        RunDetection<0>::itRan = true;
+    })(1, 2);
+
+    ASSERT_TRUE(runDetection.itRan);
+}
+
+TEST(FunctionRefTest, takes_arguments) {
+    RunDetection<0> runDetection;
+
+    mongo::function_ref<void(int, int)>([](int a, int b) {
+        ASSERT_EQ(a, 1);
+        ASSERT_EQ(b, 2);
+        RunDetection<0>::itRan = true;
+    })(1, 2);
+
+    ASSERT_TRUE(runDetection.itRan);
+}
+
 TEST(UniqueFunctionTest, returns_reference) {
     struct Immobile {
         Immobile() = default;