diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index a11f5cee..1bf3d858 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -89,3 +89,5 @@ run exception/erase_exception_tests.cpp ;
 run exception/rehash_exception_tests.cpp ;
 run exception/swap_exception_tests.cpp : : : <define>BOOST_UNORDERED_SWAP_METHOD=2 ;
 run exception/merge_exception_tests.cpp ;
+
+run quick.cpp ;
diff --git a/test/quick.cpp b/test/quick.cpp
new file mode 100644
index 00000000..e0f6a591
--- /dev/null
+++ b/test/quick.cpp
@@ -0,0 +1,19 @@
+// Copyright 2022 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/unordered_map.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <string>
+
+int main()
+{
+    boost::unordered_map<std::string, int> map;
+
+    map[ "2" ] = 2;
+
+    BOOST_TEST_EQ( map[ "1" ], 0 );
+    BOOST_TEST_EQ( map[ "2" ], 2 );
+
+    return boost::report_errors();
+}