mirror of git://gcc.gnu.org/git/gcc.git
				
				
				
			
		
			
				
	
	
		
			38 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			38 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			C++
		
	
	
	
| // { dg-do compile { target c++11 } }
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| // { dg-require-gthreads "" }
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| 
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| // Copyright (C) 2018-2019 Free Software Foundation, Inc.
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| //
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| // This file is part of the GNU ISO C++ Library.  This library is free
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| // software; you can redistribute it and/or modify it under the
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| // terms of the GNU General Public License as published by the
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| // Free Software Foundation; either version 3, or (at your option)
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| // any later version.
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| 
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| // This library is distributed in the hope that it will be useful,
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| // but WITHOUT ANY WARRANTY; without even the implied warranty of
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| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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| // GNU General Public License for more details.
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| 
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| // You should have received a copy of the GNU General Public License along
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| // with this library; see the file COPYING3.  If not see
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| // <http://www.gnu.org/licenses/>.
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| 
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| #include <future>
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| 
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| // PR libstdc++/84532
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| 
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| struct F
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| {
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|   template<typename T, typename U>
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|     void operator()(T, U, int&)
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|     {
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|       using std::is_same;
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|       using std::reference_wrapper;
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|       static_assert(is_same<T, reference_wrapper<int>>::value, "");
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|       static_assert(is_same<U, reference_wrapper<const int>>::value, "");
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|     }
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| };
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| int i = 0;
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| auto fut = std::async(F{}, std::ref(i), std::cref(i), std::ref(i));
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