Allow different entry scope for registerDeclarations.

1 files changed, 6 insertions, 1 deletions

diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp
index be59d3d2..06a9e1ce 100644
--- a/libsolidity/analysis/TypeChecker.cpp
+++ b/libsolidity/analysis/TypeChecker.cpp
@@ -427,7 +427,12 @@ bool TypeChecker::visit(StructDefinition const& _struct)
 
 bool TypeChecker::visit(FunctionDefinition const& _function)
 {
-	bool isLibraryFunction = dynamic_cast<ContractDefinition const&>(*_function.scope()).isLibrary();
+	bool isLibraryFunction = false;
+	if (
+		dynamic_cast<ContractDefinition const*>(_function.scope()) &&
+		dynamic_cast<ContractDefinition const*>(_function.scope())->isLibrary()
+	)
+		isLibraryFunction = true;
 	if (_function.isPayable())
 	{
 		if (isLibraryFunction)