diff options
Diffstat (limited to 'libsolidity/codegen/ExpressionCompiler.cpp')
| -rw-r--r-- | libsolidity/codegen/ExpressionCompiler.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp index 4695ff96..4a81e27d 100644 --- a/libsolidity/codegen/ExpressionCompiler.cpp +++ b/libsolidity/codegen/ExpressionCompiler.cpp @@ -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 |