From 3b9b71e0ae86cc20c6a0201b027bd45bee4257e5 Mon Sep 17 00:00:00 2001
From: Lu Guanqun <guanqun.lu@gmail.com>
Date: Sun, 1 Mar 2015 11:34:39 +0800
Subject: implement overload resolution

---
 ExpressionCompiler.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'ExpressionCompiler.cpp')

diff --git a/ExpressionCompiler.cpp b/ExpressionCompiler.cpp
index 3d7a2531..5e5442ba 100644
--- a/ExpressionCompiler.cpp
+++ b/ExpressionCompiler.cpp
@@ -822,7 +822,11 @@ bool ExpressionCompiler::visit(IndexAccess const& _indexAccess)
 void ExpressionCompiler::endVisit(Identifier const& _identifier)
 {
 	Declaration const* declaration = _identifier.getReferencedDeclaration();
-	if (MagicVariableDeclaration const* magicVar = dynamic_cast<MagicVariableDeclaration const*>(declaration))
+	if (declaration == nullptr)
+	{
+		// no-op
+	}
+	else if (MagicVariableDeclaration const* magicVar = dynamic_cast<MagicVariableDeclaration const*>(declaration))
 	{
 		if (magicVar->getType()->getCategory() == Type::Category::Contract)
 			// "this" or "super"
-- 
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