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Use error signature for revert data.

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chriseth committed 2018-04-12 13:09:38 +02:00
1 parent 338a875134
commit 4faa839813
4 files changed
+38 -29
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libsolidity/codegen/CompilerUtils.cpp
+14
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@@ -78,6 +78,20 @@ void CompilerUtils::toSizeAfterFreeMemoryPointer()
m_context << Instruction::SWAP1;
}
void CompilerUtils::revertWithStringData(Type const& _argumentType)
{
solAssert(_argumentType.isImplicitlyConvertibleTo(*Type::fromElementaryTypeName("string memory")), "");
fetchFreeMemoryPointer();
m_context << (u256(FixedHash<4>::Arith(FixedHash<4>(dev::keccak256("Error(string)")))) << (256 - 32));
m_context << Instruction::DUP2 << Instruction::MSTORE;
m_context << u256(4) << Instruction::ADD;
// Stack: <string data> <mem pos of encoding start>
abiEncode({_argumentType.shared_from_this()}, {make_shared<ArrayType>(DataLocation::Memory, true)});
toSizeAfterFreeMemoryPointer();
m_context << Instruction::REVERT;
m_context.adjustStackOffset(_argumentType.sizeOnStack());
}
unsigned CompilerUtils::loadFromMemory(
unsigned _offset,
Type const& _type,