1 files changed, 28 insertions, 0 deletions
diff --git a/unittests/ADT/FunctionRefTest.cpp b/unittests/ADT/FunctionRefTest.cpp
new file mode 100644
index 0000000..075d9a0
--- /dev/null
+++ b/unittests/ADT/FunctionRefTest.cpp
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+//===- llvm/unittest/ADT/MakeUniqueTest.cpp - make_unique unit tests ------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/STLExtras.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+// Ensure that copies of a function_ref copy the underlying state rather than
+// causing one function_ref to chain to the next.
+TEST(FunctionRefTest, Copy) {
+  auto A = [] { return 1; };
+  auto B = [] { return 2; };
+  function_ref<int()> X = A;
+  function_ref<int()> Y = X;
+  X = B;
+  EXPECT_EQ(1, Y());
+}
+
+}