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Fixed internal error related to ecrecover and ABIEncoderV2. #6000

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Merged
merged 1 commit into from
Feb 19, 2019
Merged

Fixed internal error related to ecrecover and ABIEncoderV2. #6000

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1 change: 1 addition & 0 deletions Changelog.md
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ Compiler Features:

Bugfixes:
* ABIEncoderV2: Fix internal error related to bare delegatecall.
* ABIEncoderV2: Fix internal error related to ecrecover.
* ABIEncoderV2: Fix internal error related to mappings as library parameters.
* Yul: Properly detect name clashes with functions before their declaration.

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7 changes: 6 additions & 1 deletion libsolidity/codegen/ExpressionCompiler.cpp
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Expand Up @@ -1967,12 +1967,17 @@ void ExpressionCompiler::appendExternalFunctionCall(
// If the function takes arbitrary parameters or is a bare call, copy dynamic length data in place.
// Move arguments to memory, will not update the free memory pointer (but will update the memory
// pointer on the stack).
bool encodeInPlace = _functionType.takesArbitraryParameters() || _functionType.isBareCall();
if (_functionType.kind() == FunctionType::Kind::ECRecover)
// This would be the only combination of padding and in-place encoding,
// but all parameters of ecrecover are value types anyway.
encodeInPlace = false;
bool encodeForLibraryCall = funKind == FunctionType::Kind::DelegateCall;
utils().encodeToMemory(
argumentTypes,
parameterTypes,
_functionType.padArguments(),
_functionType.takesArbitraryParameters() || _functionType.isBareCall(),
encodeInPlace,
encodeForLibraryCall
);

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19 changes: 19 additions & 0 deletions test/libsolidity/SolidityEndToEndTest.cpp
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Expand Up @@ -2633,6 +2633,25 @@ BOOST_AUTO_TEST_CASE(ecrecover)
ABI_CHECK(callContractFunction("a(bytes32,uint8,bytes32,bytes32)", h, v, r, s), encodeArgs(addr));
}

BOOST_AUTO_TEST_CASE(ecrecover_abiV2)
{
char const* sourceCode = R"(
pragma experimental ABIEncoderV2;
contract test {
function a(bytes32 h, uint8 v, bytes32 r, bytes32 s) public returns (address addr) {
return ecrecover(h, v, r, s);
}
}
)";
compileAndRun(sourceCode);
u256 h("0x18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c");
uint8_t v = 28;
u256 r("0x73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75f");
u256 s("0xeeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549");
u160 addr("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b");
ABI_CHECK(callContractFunction("a(bytes32,uint8,bytes32,bytes32)", h, v, r, s), encodeArgs(addr));
}

BOOST_AUTO_TEST_CASE(inter_contract_calls)
{
char const* sourceCode = R"(
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