From ca7ee404378a47ba55c2ed4217db1c63a7e62277 Mon Sep 17 00:00:00 2001
From: John Scipione <jscipione@gmail.com>
Date: Wed, 14 May 2014 17:44:16 -0400
Subject: [PATCH] IFSSaver: Add some better error checking

---
 src/add-ons/screen_savers/ifs/IFSSaver.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/add-ons/screen_savers/ifs/IFSSaver.cpp b/src/add-ons/screen_savers/ifs/IFSSaver.cpp
index af3325fac2..94babbbf50 100644
--- a/src/add-ons/screen_savers/ifs/IFSSaver.cpp
+++ b/src/add-ons/screen_savers/ifs/IFSSaver.cpp
@@ -153,9 +153,18 @@ IFSSaver::StartSaver(BView* view, bool preview)
 	SetTickSize((bigtime_t)floor(1000000.0 / fps + 0.5));
 
 	fIsPreview = preview;
+
+	if (view == NULL)
+		return B_BAD_VALUE;
+
 	fBounds = view->Bounds();
+	if (!fBounds.IsValid())
+		return B_BAD_VALUE;
 
 	_Init(fBounds);
+	if (fIFS == NULL)
+		return B_ERROR;
+
 	fIFS->SetAdditive(fIsPreview || fAdditive);
 	fIFS->SetSpeed(fSpeed);