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			24 lines
		
	
	
		
			506 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			24 lines
		
	
	
		
			506 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
pragma experimental SMTChecker;
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library L {
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	struct S {
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		uint256[] data;
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	}
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	function f(S memory _s) internal pure returns (uint256) {
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		require(_s.data.length > 0);
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		return 42;
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	}
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}
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contract C {
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	using L for L.S;
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	function f() public pure returns (uint256 y) {
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		L.S memory x;
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		y = (x.f)();
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		assert(y == 42); // should hold
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	}
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}
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// ----
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// Warning 6031: (289-292): Internal error: Expression undefined for SMT solver.
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// Warning 6031: (289-292): Internal error: Expression undefined for SMT solver.
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