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				https://github.com/ethereum/solidity
				synced 2023-10-03 13:03:40 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			25 lines
		
	
	
		
			577 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			25 lines
		
	
	
		
			577 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| contract C {
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| 	uint x;
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| 	address owner;
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| 
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| 	modifier onlyOwner {
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| 		if (msg.sender == owner) _;
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| 	}
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| 
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| 	function f() public onlyOwner {
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| 		x = 0;
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| 	}
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| 	function g(uint y) public {
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| 		x = 1;
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| 		if (y > 0)
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| 			f();
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| 		// Fails for {y = >0, msg.sender == owner, x = 0}.
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| 		assert(x > 0);
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| 	}
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| }
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| // ====
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| // SMTEngine: all
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| // SMTIgnoreOS: macos
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| // ----
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| // Warning 6328: (254-267): CHC: Assertion violation happens here.\nCounterexample:\nx = 0, owner = 0x0\ny = 1\n\nTransaction trace:\nC.constructor()\nState: x = 0, owner = 0x0\nC.f()\nState: x = 0, owner = 0x0\nC.g(1)\n    C.f() -- internal call
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