stateless_test.cpp:

- Test function's ability to optimize away allocations for stateless function
    objects


[SVN r12557]

test/stateless_test.cpp

@@ -0,0 +1,47 @@
+// Boost.Function library
+
+// Copyright (C) 2001 Doug Gregor (gregod@cs.rpi.edu)
+//
+// Permission to copy, use, sell and distribute this software is granted
+// provided this copyright notice appears in all copies.
+// Permission to modify the code and to distribute modified code is granted
+// provided this copyright notice appears in all copies, and a notice
+// that the code was modified is included with the copyright notice.
+//
+// This software is provided "as is" without express or implied warranty,
+// and with no claim as to its suitability for any purpose.
+
+// For more information, see http://www.boost.org
+
+#define BOOST_INCLUDE_MAIN
+#include <boost/test/test_tools.hpp>
+#include <boost/function.hpp>
+#include <stdexcept>
+
+struct stateless_integer_add {
+  int operator()(int x, int y) const { return x+y; }
+
+  void* operator new(std::size_t, stateless_integer_add*)
+  {
+    throw std::runtime_error("Cannot allocate a stateless_integer_add");
+  }
+
+  void operator delete(void*, stateless_integer_add*)
+  {
+  }
+};
+
+namespace boost {
+  template<>
+  struct is_stateless<stateless_integer_add> {
+    BOOST_STATIC_CONSTANT(bool, value = true);
+  };
+}
+
+int test_main(int, char*[])
+{
+  boost::function<int, int, int> f;
+  f = stateless_integer_add();
+
+  return 0;
+}