contract C { function abiEncodeStringLiteral() public pure { bytes memory b1 = abi.encode(""); bytes memory b2 = abi.encode(""); // should hold, but currently fails due to string literal abstraction assert(b1.length == b2.length); bytes memory b3 = abi.encode(bytes("")); assert(b1.length == b3.length); // should fail bytes memory b4 = abi.encode(bytes24("")); // should hold, but currently fails due to string literal abstraction assert(b1.length == b4.length); bytes memory b5 = abi.encode(string("")); assert(b1.length == b5.length); // should fail } } // ==== // SMTEngine: all // ---- // Warning 1218: (208-238='assert(b1.length == b2.length)'): CHC: Error trying to invoke SMT solver. // Warning 1218: (286-316='assert(b1.length == b3.length)'): CHC: Error trying to invoke SMT solver. // Warning 1218: (453-483='assert(b1.length == b4.length)'): CHC: Error trying to invoke SMT solver. // Warning 1218: (532-562='assert(b1.length == b5.length)'): CHC: Error trying to invoke SMT solver. // Warning 6328: (208-238='assert(b1.length == b2.length)'): CHC: Assertion violation might happen here. // Warning 6328: (286-316='assert(b1.length == b3.length)'): CHC: Assertion violation might happen here. // Warning 6328: (453-483='assert(b1.length == b4.length)'): CHC: Assertion violation might happen here. // Warning 6328: (532-562='assert(b1.length == b5.length)'): CHC: Assertion violation might happen here. // Warning 4661: (208-238='assert(b1.length == b2.length)'): BMC: Assertion violation happens here. // Warning 4661: (286-316='assert(b1.length == b3.length)'): BMC: Assertion violation happens here. // Warning 4661: (453-483='assert(b1.length == b4.length)'): BMC: Assertion violation happens here. // Warning 4661: (532-562='assert(b1.length == b5.length)'): BMC: Assertion violation happens here.