From 259f15da6f1637afe6a1236124076b16d4dd4b6b Mon Sep 17 00:00:00 2001
From: Bart van Strien <bart.bes+projects@gmail.com>
Date: Wed, 17 Jul 2013 00:06:53 +0200
Subject: [PATCH] Apply box2d heap tickler patch: make sure
 ChainShape:getPoints has enough stack size

---
 src/modules/physics/box2d/wrap_ChainShape.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/modules/physics/box2d/wrap_ChainShape.cpp b/src/modules/physics/box2d/wrap_ChainShape.cpp
index b210a734b..cfbeb24aa 100644
--- a/src/modules/physics/box2d/wrap_ChainShape.cpp
+++ b/src/modules/physics/box2d/wrap_ChainShape.cpp
@@ -92,6 +92,8 @@ int w_ChainShape_getPoints(lua_State *L)
 	ChainShape *c = luax_checkchainshape(L, 1);
 	const b2Vec2 *verts = c->getPoints();
 	int count = c->getVertexCount();
+	if (!lua_checkstack(L, count*2))
+		return luaL_error(L, "Too many return values");
 	for (int i = 0; i < count; i++)
 	{
 		b2Vec2 v = Physics::scaleUp(verts[i]);