cerc-io/solidity
11
0 Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #839 from chriseth/checkcode

Browse Source 
BREAKING: Make function calls throw if target does not have code.
This commit is contained in:
chriseth authored and GitHub committed 2016-08-17 16:44:15 +02:00
2 parents d6579a0a5f 774bb8ab3b
commit b2507e9f10
3 files changed
+37
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

libsolidity/codegen/ExpressionCompiler.cpp
+7
View File
@@ -1524,6 +1524,13 @@ void ExpressionCompiler::appendExternalFunctionCall(
m_context << u256(0);
m_context << dupInstruction(m_context.baseToCurrentStackOffset(contractStackPos));
// Check the the target contract exists (has code) for non-low-level calls.
if (funKind == FunctionKind::External || funKind == FunctionKind::CallCode || funKind == FunctionKind::DelegateCall)
{
m_context << Instruction::DUP1 << Instruction::EXTCODESIZE << Instruction::ISZERO;
m_context.appendConditionalJumpTo(m_context.errorTag());
}
if (_functionType.gasSet())
m_context << dupInstruction(m_context.baseToCurrentStackOffset(gasStackPos));
else