From 7786e6d5610c2e5c6676c6ed01afe4a3d1223685 Mon Sep 17 00:00:00 2001
From: hrkrshnn <webmail.hari@gmail.com>
Date: Thu, 11 Feb 2021 14:44:55 +0100
Subject: [PATCH] Fix IR bug when modifier parameter was function return
 variable

The bug was that function return variables were not part of the m_context.localVariable during
the modifier generation and a looking up them was throwing.
---
 libsolidity/codegen/ir/IRGenerator.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libsolidity/codegen/ir/IRGenerator.cpp b/libsolidity/codegen/ir/IRGenerator.cpp
index 2f817d5db..22670500c 100644
--- a/libsolidity/codegen/ir/IRGenerator.cpp
+++ b/libsolidity/codegen/ir/IRGenerator.cpp
@@ -323,7 +323,7 @@ string IRGenerator::generateModifier(
 		t("functionName", functionName);
 		vector<string> retParamsIn;
 		for (auto const& varDecl: _function.returnParameters())
-			retParamsIn += IRVariable(*varDecl).stackSlots();
+			retParamsIn += m_context.addLocalVariable(*varDecl).stackSlots();
 		vector<string> params = retParamsIn;
 		for (auto const& varDecl: _function.parameters())
 			params += m_context.addLocalVariable(*varDecl).stackSlots();