Fixed string inside struct allocation bug.

1 files changed, 1 insertions, 1 deletions

diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp
index 05d9ea1c..1a089d63 100644
--- a/libsolidity/codegen/ExpressionCompiler.cpp
+++ b/libsolidity/codegen/ExpressionCompiler.cpp
@@ -1226,7 +1226,7 @@ void ExpressionCompiler::appendExternalFunctionCall(
 	else
 		for (auto const& retType: _functionType.returnParameterTypes())
 		{
-			solAssert(retType->calldataEncodedSize() > 0, "Unable to return dynamic type from external call.");
+			solAssert(!retType->isDynamicallySized(), "Unable to return dynamic type from external call.");
 			retSize += retType->calldataEncodedSize();
 		}