From a9161f091399489289dcbc052f9e82b8095fc557 Mon Sep 17 00:00:00 2001
From: Saveliy Tretiakov <saveliyt@gmail.com>
Date: Fri, 14 Apr 2006 16:31:06 +0000
Subject: [PATCH] EngCreateBitmap may return null. Add return value checks

svn path=/trunk/; revision=21589
---
 reactos/subsystems/win32/win32k/eng/engmisc.c | 7 +++++++
 reactos/subsystems/win32/win32k/eng/surface.c | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/reactos/subsystems/win32/win32k/eng/engmisc.c b/reactos/subsystems/win32/win32k/eng/engmisc.c
index 5f35b6f3f66..77cac7cd912 100644
--- a/reactos/subsystems/win32/win32k/eng/engmisc.c
+++ b/reactos/subsystems/win32/win32k/eng/engmisc.c
@@ -68,6 +68,13 @@ IntEngEnter(PINTENG_ENTER_LEAVE EnterLeave,
     EnterLeave->OutputBitmap = EngCreateBitmap(BitmapSize, Width,
                                                DestObj->iBitmapFormat,
                                                BMF_TOPDOWN | BMF_NOZEROINIT, NULL);
+                                               
+    if (!EnterLeave->OutputBitmap)
+      {
+      DPRINT1("EngCreateBitmap() failed\n");
+      return FALSE;
+      }
+      
     *OutputObj = EngLockSurface((HSURF)EnterLeave->OutputBitmap);
 
     EnterLeave->DestRect.left = 0;
diff --git a/reactos/subsystems/win32/win32k/eng/surface.c b/reactos/subsystems/win32/win32k/eng/surface.c
index e83124aacd7..d4245ec6078 100644
--- a/reactos/subsystems/win32/win32k/eng/surface.c
+++ b/reactos/subsystems/win32/win32k/eng/surface.c
@@ -122,6 +122,12 @@ EngCreateDeviceBitmap(IN DHSURF dhsurf,
   SURFOBJ *SurfObj;
 
   NewBitmap = EngCreateBitmap(Size, DIB_GetDIBWidthBytes(Size.cx, BitsPerFormat(Format)), Format, 0, NULL);
+  if(!NewBitmap) 
+  {
+    DPRINT1("EngCreateBitmap failed\n");
+    return 0;
+  }
+    
   SurfObj = EngLockSurface((HSURF)NewBitmap);
   SurfObj->dhsurf = dhsurf;
   EngUnlockSurface(SurfObj);