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-rw-r--r--libsolidity/ast/Types.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index afedbb69..f49e1222 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -2126,8 +2126,11 @@ bool StructType::canBeUsedExternally(bool _inLibrary) const
// passed by value and thus the encoding does not differ, but it will disallow
// mappings.
for (auto const& var: m_struct.members())
+ {
+ solAssert(var->annotation().type, "");
if (!var->annotation().type->canBeUsedExternally(false))
return false;
+ }
}
return true;
}