12345678910111213141516171819202122232425262728293031 |
- [/
- Copyright 2007 John Maddock.
- Distributed under the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or copy at
- http://www.boost.org/LICENSE_1_0.txt).
- ]
- [section:has_virtual_destructor has_virtual_destructor]
- template <class T>
- struct has_virtual_destructor : public __tof {};
-
- __inherit If T is a (possibly cv-qualified) type with a virtual destructor
- then inherits from __true_type, otherwise inherits from __false_type.
- __compat There is currently no
- way to portably implement this trait: the default version
- always inherits from __false_type, and has to be explicitly specialized for
- types with virtual destructors unless the compiler used has compiler __intrinsics
- that enable the trait to do the right thing:
- Currently (June 2015) compilers more recent than Visual C++ 8, GCC-4.3, Greenhills 6.0,
- Intel-11.0, plus Codegear and Clang have the necessary compiler __intrinsics to ensure that this
- trait "just works". You may also test to see if the necessary __intrinsics are available
- by checking to see if the macro `BOOST_HAS_VIRTUAL_DESTRUCTOR` is defined.
- __std_ref 12.4.
- __header ` #include <boost/type_traits/has_virtual_destructor.hpp>` or ` #include <boost/type_traits.hpp>`
- [endsect]
|