From: dirk <dirk@git.imagemagick.org>
Date: Tue, 22 Mar 2016 22:25:05 +0000 (+0100)
Subject: Fixed off by one issue and increased buffer size.
X-Git-Tag: 7.0.1-0~146
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c062b6cf5680afdf8024bad74e563e15d99f3fac;p=imagemagick

Fixed off by one issue and increased buffer size.
---

diff --git a/MagickCore/opencl-private.h b/MagickCore/opencl-private.h
index cfc39eb84..86c1e7be0 100644
--- a/MagickCore/opencl-private.h
+++ b/MagickCore/opencl-private.h
@@ -39,7 +39,7 @@ extern "C" {
   typedef struct { unsigned char t[8]; } cl_device_type; /* 64-bit */
 #else
 
-#define MAX_COMMAND_QUEUES 8
+#define MAX_COMMAND_QUEUES 16
 
 /*
  *
diff --git a/MagickCore/opencl.c b/MagickCore/opencl.c
index b47103280..3a4097b83 100644
--- a/MagickCore/opencl.c
+++ b/MagickCore/opencl.c
@@ -1512,7 +1512,7 @@ MagickPrivate MagickBooleanType RelinquishOpenCLCommandQueue(MagickCLEnv clEnv,
 
   LockSemaphoreInfo(clEnv->commandQueuesLock);
 
-  if (clEnv->commandQueuesPos >= MAX_COMMAND_QUEUES)
+  if (clEnv->commandQueuesPos >= MAX_COMMAND_QUEUES-1)
     status=(clEnv->library->clReleaseCommandQueue(queue) == CL_SUCCESS) ?
       MagickTrue : MagickFalse;
   else