From f3d2fedc0931a91575ab8ff109e26b144426fd55 Mon Sep 17 00:00:00 2001
From: clifford <clifford@b57f626f-c46c-0410-a088-ec61d464b74c>
Date: Sun, 22 Nov 2009 09:26:22 +0000
Subject: Clifford Wolf: 	Fixed a bug in the expression evaluator 
 (thx to Ralf Schlatterbeck for the bug report)

git-svn-id: http://svn.clifford.at/openscad/trunk@135 b57f626f-c46c-0410-a088-ec61d464b74c

diff --git a/context.cc b/context.cc
index fb2afcf..f7e8cf3 100644
--- a/context.cc
+++ b/context.cc
@@ -43,7 +43,8 @@ void Context::args(const QVector<QString> &argnames, const QVector<Expression*>
 	int posarg = 0;
 	for (int i=0; i<call_argnames.size(); i++) {
 		if (call_argnames[i].isEmpty()) {
-			set_variable(argnames[posarg++], call_argvalues[i]);
+			if (posarg < argnames.size())
+				set_variable(argnames[posarg++], call_argvalues[i]);
 		} else {
 			set_variable(call_argnames[i], call_argvalues[i]);
 		}
-- 
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