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-rw-r--r--libsolidity/ast/Types.cpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index ccf31543..b1cd15b4 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -2929,6 +2929,17 @@ string FunctionType::externalSignature() const
{
solAssert(m_declaration != nullptr, "External signature of function needs declaration");
solAssert(!m_declaration->name().empty(), "Fallback function has no signature.");
+ switch (kind())
+ {
+ case Kind::Internal:
+ case Kind::External:
+ case Kind::CallCode:
+ case Kind::DelegateCall:
+ case Kind::Event:
+ break;
+ default:
+ solAssert(false, "Invalid function type for requesting external signature.");
+ }
bool const inLibrary = dynamic_cast<ContractDefinition const&>(*m_declaration->scope()).isLibrary();
FunctionTypePointer external = interfaceFunctionType();