diff options
Diffstat (limited to 'libsolidity/analysis/TypeChecker.cpp')
| -rw-r--r-- | libsolidity/analysis/TypeChecker.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp index 999a2a97..487959c5 100644 --- a/libsolidity/analysis/TypeChecker.cpp +++ b/libsolidity/analysis/TypeChecker.cpp @@ -366,6 +366,16 @@ void TypeChecker::checkContractIllegalOverrides(ContractDefinition const& _contr } } +namespace { + +bool functionIsInInterface(FunctionDefinition const& _function) +{ + return dynamic_cast<ContractDefinition const*>(_function.scope()) && + dynamic_cast<ContractDefinition const*>(_function.scope())->contractKind() == ContractDefinition::ContractKind::Interface; +} + +} + void TypeChecker::checkFunctionOverride(FunctionDefinition const& function, FunctionDefinition const& super) { FunctionType functionType(function); @@ -378,7 +388,12 @@ void TypeChecker::checkFunctionOverride(FunctionDefinition const& function, Func function.annotation().superFunction = &super; if (function.visibility() != super.visibility()) + { + // visibility is enforced to be external in interfaces, but a contract can override that with public + if (functionIsInInterface(super) && !functionIsInInterface(function) && function.visibility() == FunctionDefinition::Visibility::Public) + return; overrideError(function, super, "Overriding function visibility differs."); + } else if (function.stateMutability() != super.stateMutability()) overrideError( |