From 736b381d132035639709852f4942f739f1664144 Mon Sep 17 00:00:00 2001
From: Christian Mazakas <christian.mazakas@gmail.com>
Date: Tue, 17 Dec 2024 10:55:34 -0800
Subject: [PATCH] add failing test case

Passing an lvalue ref parameter when arguments are by-value causes a failure of reference binding.
---
 test/function_ref_fn_test.cpp  | 3 ++-
 test/function_ref_mfn_test.cpp | 3 ++-
 test/function_ref_obj_test.cpp | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/test/function_ref_fn_test.cpp b/test/function_ref_fn_test.cpp
index 79e8065..a5ca519 100644
--- a/test/function_ref_fn_test.cpp
+++ b/test/function_ref_fn_test.cpp
@@ -98,8 +98,9 @@ int main() {
 
   // f1
   {
+    int x = 1;
     compat::function_ref<int(int)> fv1(f1);
-    BOOST_TEST_EQ(fv1(1), 1);
+    BOOST_TEST_EQ(fv1(x), 1);
 
     compat::function_ref<int(int) const> fv2(f1);
     BOOST_TEST_EQ(fv2(1), 1);
diff --git a/test/function_ref_mfn_test.cpp b/test/function_ref_mfn_test.cpp
index 17e8c11..292f3a1 100644
--- a/test/function_ref_mfn_test.cpp
+++ b/test/function_ref_mfn_test.cpp
@@ -41,8 +41,9 @@ int main() {
     compat::function_ref<int(F1&)> fn1(compat::nontype_t<&F1::m1>{});
     BOOST_TEST_EQ(fn1(f1), 0);
 
+    int x = 2;
     compat::function_ref<int(F1&, int)> fn2(compat::nontype_t<&F1::m2>{});
-    BOOST_TEST_EQ(fn2(f1, 2), 12);
+    BOOST_TEST_EQ(fn2(f1, x), 12);
 
     compat::function_ref<int(F1&, int, int)> fn3(compat::nontype_t<&F1::m3>{});
     BOOST_TEST_EQ(fn3(f1, 2, 3), 123);
diff --git a/test/function_ref_obj_test.cpp b/test/function_ref_obj_test.cpp
index e9b4e62..98e0eb2 100644
--- a/test/function_ref_obj_test.cpp
+++ b/test/function_ref_obj_test.cpp
@@ -65,8 +65,8 @@ int main() {
       BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<S1>, F1 const&&>));
 
       compat::function_ref<S2> fv2(f);
-
-      BOOST_TEST_EQ(fv2(1), 1);
+      int x = 1;
+      BOOST_TEST_EQ(fv2(x), 1);
 
       BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<S2>, F1 const>));
       BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<S2>, F1 const&>));