From 28734daa06dd27c2e09f9c8ec506439af11389c9 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar.beutner@netways.de>
Date: Thu, 18 Dec 2014 11:21:11 +0100
Subject: [PATCH] Fix crash when accessing invalid fields

fixes #8104
---
 lib/config/configitem.cpp | 3 ++-
 lib/config/expression.cpp | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/config/configitem.cpp b/lib/config/configitem.cpp
index 43d1c124d..d71e370d3 100644
--- a/lib/config/configitem.cpp
+++ b/lib/config/configitem.cpp
@@ -165,7 +165,8 @@ DynamicObject::Ptr ConfigItem::Commit(bool discard)
 
 	try {
 		ScriptFrame frame(dobj);
-		frame.Locals = m_Scope;
+		if (m_Scope)
+			m_Scope->CopyTo(frame.Locals);
 		m_Expression->Evaluate(frame, &debugHints);
 	} catch (const ScriptError& ex) {
 		ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), ex.GetDebugInfo());
diff --git a/lib/config/expression.cpp b/lib/config/expression.cpp
index c4ad058ca..3b4c7c77e 100644
--- a/lib/config/expression.cpp
+++ b/lib/config/expression.cpp
@@ -122,7 +122,7 @@ bool VariableExpression::GetReference(ScriptFrame& frame, bool init_dict, Value
 		if (dhint)
 			*dhint = NULL;
 	} else
-		*parent = frame.Locals;
+		*parent = frame.Self;
 
 	return true;
 }
@@ -418,8 +418,8 @@ bool IndexerExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *
 	String vindex;
 
 	if (m_Operand1->GetReference(frame, init_dict, &vparent, &vindex, dhint)) {
-		if (init_dict && VMOps::GetField(vparent, vindex).IsEmpty())
-			VMOps::SetField(vparent, vindex, new Dictionary());
+		if (init_dict && VMOps::GetField(vparent, vindex, m_Operand1->GetDebugInfo()).IsEmpty())
+			VMOps::SetField(vparent, vindex, new Dictionary(), m_Operand1->GetDebugInfo());
 
 		*parent = VMOps::GetField(vparent, vindex, m_DebugInfo);
 	} else