1 files changed, 46 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc b/libstdc++-v3/testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc
new file mode 100644
index 00000000000..91a0165d212
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++23" }
+// { dg-do compile { target c++23 } }
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+constexpr bool
+test_swap_single()
+{
+  std::unique_ptr<int> p1;
+  swap(p1, p1);
+  VERIFY( !p1 );
+  std::unique_ptr<int> p2;
+  swap(p1, p2);
+  VERIFY( !p1 && !p2 );
+  std::unique_ptr<int> p3(new int(3));
+  swap(p3, p3);
+  VERIFY( *p3 == 3 );
+  swap(p1, p3);
+  VERIFY( *p1 == 3 );
+  std::unique_ptr<int> p4(new int(4));
+  swap(p4, p1);
+  VERIFY( *p4 == 3 );
+  VERIFY( *p1 == 4 );
+
+  return true;
+}
+static_assert( test_swap_single() );
+
+constexpr bool
+test_swap_array()
+{
+  std::unique_ptr<int[]> a1;
+  std::unique_ptr<int[]> a2;
+  swap(a1, a2);
+  VERIFY( !a1 && !a2 );
+  std::unique_ptr<int[]> a3(new int[]{3});
+  swap(a1, a3);
+  VERIFY( a1[0] == 3 );
+  std::unique_ptr<int[]> a4(new int[]{4, 5});
+  swap(a1, a4);
+  VERIFY( a1[1] == 5 );
+
+  return true;
+}
+static_assert( test_swap_array() );