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			29 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			29 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| pragma experimental SMTChecker;
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| contract C {
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| 	function abiencodePackedSimple(bool t, uint x, uint y, uint z, uint[] memory a, uint[] memory b) public pure {
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| 		require(x == y);
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| 		bytes memory b1 = abi.encodePacked(x, z, a);
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| 		bytes memory b2 = abi.encodePacked(y, z, a);
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| 		assert(b1.length == b2.length);
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| 
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| 		bytes memory b3 = abi.encodePacked(y, z, b);
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| 		assert(b1.length == b3.length); // should fail
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| 
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| 		bytes memory b4 = abi.encodePacked(t, z, a);
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| 		assert(b1.length == b4.length); // should fail
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| 
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| 		bytes memory b5 = abi.encodePacked(y, y, y, y, a, a, a);
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| 		assert(b1.length != b5.length); // should fail
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| 		assert(b1.length == b5.length); // should fail
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| 
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| 		// Commented out because of nondeterminism in Spacer in Z3 4.8.9
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| 		//bytes memory b6 = abi.encode(x, z, a);
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| 		//assert(b1.length == b6.length); // should fail
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| 	}
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| }
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| // ----
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| // Warning 6328: (354-384): CHC: Assertion violation happens here.
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| // Warning 6328: (451-481): CHC: Assertion violation happens here.
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| // Warning 6328: (560-590): CHC: Assertion violation happens here.
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| // Warning 6328: (609-639): CHC: Assertion violation happens here.
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