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https://github.com/ethereum/solidity
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Merge pull request #2605 from roadriverrail/this-in-constructor
This in constructor
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commit
1274108ac7
@ -7,6 +7,7 @@ Features:
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* Type Checker: Disallow value transfers to contracts without a payable fallback function.
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* Type Checker: Include types in explicit conversion error message.
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* Type Checker: Raise proper error for arrays too large for ABI encoding.
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* Type checker: Warn if using ``this`` in a constructor.
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Bugfixes:
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* Type Checker: Fix invalid "specify storage keyword" warning for reference members of structs.
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@ -38,12 +38,14 @@ bool StaticAnalyzer::analyze(SourceUnit const& _sourceUnit)
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bool StaticAnalyzer::visit(ContractDefinition const& _contract)
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{
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m_library = _contract.isLibrary();
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m_currentContract = &_contract;
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return true;
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}
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void StaticAnalyzer::endVisit(ContractDefinition const&)
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{
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m_library = false;
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m_currentContract = nullptr;
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}
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bool StaticAnalyzer::visit(FunctionDefinition const& _function)
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@ -54,6 +56,7 @@ bool StaticAnalyzer::visit(FunctionDefinition const& _function)
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solAssert(!m_currentFunction, "");
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solAssert(m_localVarUseCount.empty(), "");
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m_nonPayablePublic = _function.isPublic() && !_function.isPayable();
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m_constructor = _function.isConstructor();
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return true;
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}
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@ -61,6 +64,7 @@ void StaticAnalyzer::endVisit(FunctionDefinition const&)
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{
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m_currentFunction = nullptr;
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m_nonPayablePublic = false;
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m_constructor = false;
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for (auto const& var: m_localVarUseCount)
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if (var.second == 0)
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m_errorReporter.warning(var.first->location(), "Unused local variable");
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@ -131,6 +135,11 @@ bool StaticAnalyzer::visit(MemberAccess const& _memberAccess)
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"\"callcode\" has been deprecated in favour of \"delegatecall\"."
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);
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if (m_constructor && m_currentContract)
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if (ContractType const* type = dynamic_cast<ContractType const*>(_memberAccess.expression().annotation().type.get()))
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if (type->contractDefinition() == *m_currentContract)
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m_errorReporter.warning(_memberAccess.location(), "\"this\" used in constructor.");
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return true;
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}
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@ -77,6 +77,12 @@ private:
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std::map<VariableDeclaration const*, int> m_localVarUseCount;
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FunctionDefinition const* m_currentFunction = nullptr;
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/// Flag that indicates a constructor.
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bool m_constructor = false;
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/// Current contract.
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ContractDefinition const* m_currentContract = nullptr;
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};
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}
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@ -4506,7 +4506,7 @@ BOOST_AUTO_TEST_CASE(var_handle_divided_integers)
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}
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}
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)";
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CHECK_SUCCESS(text);
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CHECK_SUCCESS(text);
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}
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BOOST_AUTO_TEST_CASE(rational_bitnot_unary_operation)
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@ -6373,6 +6373,20 @@ BOOST_AUTO_TEST_CASE(modifiers_access_storage_pointer)
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CHECK_SUCCESS_NO_WARNINGS(text);
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}
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BOOST_AUTO_TEST_CASE(using_this_in_constructor)
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{
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char const* text = R"(
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contract C {
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function C() {
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this.f();
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}
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function f() {
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}
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}
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)";
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CHECK_WARNING(text, "\"this\" used in constructor");
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}
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BOOST_AUTO_TEST_SUITE_END()
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}
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