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			59 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
|  | //  (C) Copyright John Maddock 2001.  | ||
|  | //  Use, modification and distribution are subject to 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) | ||
|  | 
 | ||
|  | //  See http://www.boost.org/libs/config for most recent version. | ||
|  | 
 | ||
|  | //  MACRO:         BOOST_NO_DEPENDENT_NESTED_DERIVATIONS | ||
|  | //  TITLE:         dependent nested template classes | ||
|  | //  DESCRIPTION:   The compiler fails to compile | ||
|  | //                 a nested class that has a dependent base class: | ||
|  | //                 template<typename T> | ||
|  | //                 struct foo : { | ||
|  | //                    template<typename U> | ||
|  | //                    struct bar : public U {}; | ||
|  | //                 }; | ||
|  | #ifndef BOOST_NESTED_TEMPLATE | ||
|  | #define BOOST_NESTED_TEMPLATE template | ||
|  | #endif | ||
|  | 
 | ||
|  | 
 | ||
|  | namespace boost_no_dependent_nested_derivations{ | ||
|  | 
 | ||
|  | struct UDT1{}; | ||
|  | struct UDT2{}; | ||
|  | 
 | ||
|  | template<typename T>  | ||
|  | struct foo  | ||
|  | { | ||
|  |   template<typename U>  | ||
|  |   struct bar : public foo<U>  | ||
|  |   {}; | ||
|  | }; | ||
|  | 
 | ||
|  | template <class T> | ||
|  | void foo_test(T) | ||
|  | { | ||
|  |    typedef foo<T> foo_type; | ||
|  |    typedef typename foo_type::BOOST_NESTED_TEMPLATE bar<UDT2> bar_type; | ||
|  |    foo<T> ft; | ||
|  |    bar_type bt; | ||
|  |    (void) &bt; | ||
|  |    (void) &ft; | ||
|  | } | ||
|  | 
 | ||
|  | int test() | ||
|  | { | ||
|  |    foo_test(UDT1()); | ||
|  |    return 0; | ||
|  | } | ||
|  | 
 | ||
|  | } | ||
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