From ee5a9d6a4e7cac503e3a160d9a873d8b9bdecafe Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 10 Mar 2014 15:01:52 +0100
Subject: [PATCH] Check arguments passed to
 ol.geom.MultiLineString#setFlatCoordinates

---
 src/ol/geom/multilinestring.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/ol/geom/multilinestring.js b/src/ol/geom/multilinestring.js
index b096e2fe65..c075a5bd6b 100644
--- a/src/ol/geom/multilinestring.js
+++ b/src/ol/geom/multilinestring.js
@@ -222,6 +222,13 @@ ol.geom.MultiLineString.prototype.setCoordinates =
  */
 ol.geom.MultiLineString.prototype.setFlatCoordinates =
     function(layout, flatCoordinates, ends) {
+  if (goog.isNull(flatCoordinates)) {
+    goog.asserts.assert(!goog.isNull(ends) && ends.length === 0);
+  } else if (ends.length === 0) {
+    goog.asserts.assert(flatCoordinates.length === 0);
+  } else {
+    goog.asserts.assert(flatCoordinates.length == ends[ends.length - 1]);
+  }
   this.setFlatCoordinatesInternal(layout, flatCoordinates);
   this.ends_ = ends;
   this.dispatchChangeEvent();