30 lines
		
	
	
		
			648 B
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			30 lines
		
	
	
		
			648 B
		
	
	
	
		
			C++
		
	
	
	
| //===----------------------------------------------------------------------===//
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| //
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| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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| // See https://llvm.org/LICENSE.txt for license information.
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| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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| //
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| //===----------------------------------------------------------------------===//
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| 
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| // <queue>
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| 
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| // reference front();
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| 
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| #include <queue>
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| #include <cassert>
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| 
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| #include "test_macros.h"
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| 
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| int main(int, char**)
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| {
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|     std::queue<int> q;
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|     assert(q.size() == 0);
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|     q.push(1);
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|     q.push(2);
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|     q.push(3);
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|     int& ir = q.front();
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|     assert(ir == 1);
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| 
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|   return 0;
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| }
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