From 22eec833cd72b5abab2627fcacc27d2dfb6aa6e7 Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@git.imagemagick.org>
Date: Wed, 4 Oct 2017 06:55:57 +0200
Subject: [PATCH] Added null check for issue reported in #792

---
 MagickCore/opencl.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/MagickCore/opencl.c b/MagickCore/opencl.c
index a3e972cf4..dee6c021a 100644
--- a/MagickCore/opencl.c
+++ b/MagickCore/opencl.c
@@ -1249,8 +1249,13 @@ static void CacheOpenCLKernel(MagickCLDevice device,char *filename,
     CL_PROGRAM_BINARY_SIZES,sizeof(size_t),&binaryProgramSize,NULL);
   if (status != CL_SUCCESS)
     return;
-
   binaryProgram=(unsigned char*) AcquireMagickMemory(binaryProgramSize);
+  if (binaryProgram == (unsigned char *) NULL)
+    {
+      (void) ThrowMagickException(exception,GetMagickModule(),
+        ResourceLimitError,"MemoryAllocationFailed","`%s'",filename);
+      return;
+    }
   status=openCL_library->clGetProgramInfo(device->program,
     CL_PROGRAM_BINARIES,sizeof(unsigned char*),&binaryProgram,NULL);
   if (status == CL_SUCCESS)
-- 
2.40.0