Add assert_is_void_test2.cpp

test/Jamfile.v2

@@ -48,3 +48,4 @@ run source_location_test6.cpp ;
 
 run assert_test3.cpp ;
 run assert_test4.cpp ;
+run assert_is_void_test2.cpp ;

test/assert_is_void_test2.cpp

@@ -0,0 +1,37 @@
+// Copyright 2015 Ion Gaztanaga
+// Copyright 2026 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+// BOOST_ENABLE_ASSERT_HANDLER, BOOST_ENABLE_ASSERT_DEBUG_HANDLER
+
+#define BOOST_ENABLE_ASSERT_HANDLER
+#define BOOST_ENABLE_ASSERT_DEBUG_HANDLER
+#include <boost/assert.hpp>
+
+#if defined(NDEBUG)
+
+#ifndef BOOST_ASSERT_IS_VOID
+#error "BOOST_ASSERT should be void if BOOST_ENABLE_ASSERT_HANDLER, BOOST_ENABLE_ASSERT_DEBUG_HANDLER, and NDEBUG are defined"
+#endif
+
+#else
+
+#ifdef BOOST_ASSERT_IS_VOID
+#error "BOOST_ASSERT should NOT be void if BOOST_ENABLE_ASSERT_HANDLER and BOOST_ENABLE_ASSERT_DEBUG_HANDLER are defined, but NDEBUG is not"
+#endif
+
+#endif
+
+// +BOOST_DISABLE_ASSERTS
+
+#define BOOST_DISABLE_ASSERTS
+#include <boost/assert.hpp>
+
+#ifndef BOOST_ASSERT_IS_VOID
+#error "Error: BOOST_ASSERT should always be void with BOOST_DISABLE_ASSERTS"
+#endif
+
+int main()
+{
+}