ceph/src/boost/libs/serialization/test/test_static_warning.cpp

   1 //  (C) Copyright Jonathan Turkanis 2004.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org for most recent version including documentation.
   7
   8 // note: this is a compile only test.
   9
  10 #include <boost/config.hpp> // BOOST_STATIC_CONST
  11 #include <boost/static_assert.hpp>
  12 #include <boost/type_traits/is_polymorphic.hpp>
  13
  14 #include <boost/serialization/static_warning.hpp>
  15
  16 typedef char a1[2];
  17 typedef char a2[3];
  18
  19 class polymorphic {
  20     virtual ~polymorphic();
  21 };
  22
  23 class non_polymorphic {
  24 };
  25
  26 template<class T>
  27 int f(){
  28     BOOST_STATIC_WARNING(T::value);
  29     return 0;
  30 }
  31
  32 struct A {
  33     BOOST_STATIC_CONSTANT(bool, value = false);
  34 };
  35
  36 /////////////////////////////////////////////////////////////////////////
  37 // compilation of this program should show a total of 10 warning messages
  38
  39 // should show NO warning message
  40 BOOST_STATIC_WARNING(true);
  41
  42 // the following should show 5 warning message
  43 int x = f<A>();  // Warn
  44 int y = f<boost::is_polymorphic<non_polymorphic> >(); // Warn.
  45 int z = f<boost::is_polymorphic<polymorphic> >();
  46
  47 BOOST_STATIC_WARNING(sizeof(a1) == sizeof(a2)); // Warn.
  48 BOOST_STATIC_WARNING(sizeof(a1) != sizeof(a1)); // Warn.
  49 BOOST_STATIC_WARNING(! boost::is_polymorphic<polymorphic>::value); // Warn.
  50 BOOST_STATIC_WARNING(boost::is_polymorphic<non_polymorphic>::value); // Warn.
  51
  52 int main(int /* argc */, char * /* argv */[]){
  53     // should show NO warning message
  54     BOOST_STATIC_WARNING(true);
  55
  56     // the following should show 5 warning message
  57     f<A>();
  58     BOOST_STATIC_WARNING(sizeof(a1) == sizeof(a2)); // Warn.
  59     BOOST_STATIC_WARNING(sizeof(a1) != sizeof(a1)); // Warn.
  60     BOOST_STATIC_WARNING(! boost::is_polymorphic<polymorphic>::value); // Warn.
  61     BOOST_STATIC_WARNING(boost::is_polymorphic<non_polymorphic>::value); // Warn.
  62     return 0;
  63 }