fix klocwork issues

Author: sherry-yuan

test/acl_mem_test.cpp

@@ -2814,28 +2814,34 @@ TEST(acl_mem, buffer_location_property) {
   cl_mem_properties_intel props[] = {CL_MEM_ALLOC_BUFFER_LOCATION_INTEL, 0, 0};
   a = clCreateBufferWithPropertiesINTEL(m_context, props, 0, bank_size, 0,
                                         &status);
-  CHECK_EQUAL(CL_SUCCESS, status);
-  CHECK_EQUAL(1, acl_ref_count(a));
   ACL_LOCKED(CHECK(acl_mem_is_valid(a)));
-  cl_uint read_mem_id = 4;
-  size_t size_ret;
-  CHECK_EQUAL(CL_SUCCESS,
-              clGetMemObjectInfo(a, CL_MEM_ALLOC_BUFFER_LOCATION_INTEL,
-                                 sizeof(cl_uint), &read_mem_id, &size_ret));
-  CHECK_EQUAL(0, read_mem_id);
+  CHECK_EQUAL(CL_SUCCESS, status);
+  if (a) {
+    CHECK_EQUAL(1, acl_ref_count(a));
+    cl_uint read_mem_id = 4;
+    size_t size_ret;
+    CHECK_EQUAL(CL_SUCCESS,
+                clGetMemObjectInfo(a, CL_MEM_ALLOC_BUFFER_LOCATION_INTEL,
+                                  sizeof(cl_uint), &read_mem_id, &size_ret));
+    CHECK_EQUAL(0, read_mem_id);
+  }
 
   cl_buffer_region test_region = {0, 2};
   cl_mem subbuffer =
       clCreateSubBuffer(a, CL_MEM_READ_WRITE, CL_BUFFER_CREATE_TYPE_REGION,
                         &test_region, &status);
-  CHECK_EQUAL(CL_SUCCESS, status);
-  CHECK_EQUAL(2, acl_ref_count(a));
   ACL_LOCKED(CHECK(acl_mem_is_valid(subbuffer)));
-  read_mem_id = 4;
-  CHECK_EQUAL(CL_SUCCESS,
-              clGetMemObjectInfo(subbuffer, CL_MEM_ALLOC_BUFFER_LOCATION_INTEL,
-                                 sizeof(cl_uint), &read_mem_id, &size_ret));
-  CHECK_EQUAL(0, read_mem_id);
+  CHECK_EQUAL(CL_SUCCESS, status);
+  if (a) {
+    CHECK_EQUAL(2, acl_ref_count(a));
+  }
+  if (subbuffer) {
+    read_mem_id = 4;
+    CHECK_EQUAL(CL_SUCCESS,
+                clGetMemObjectInfo(subbuffer, CL_MEM_ALLOC_BUFFER_LOCATION_INTEL,
+                                  sizeof(cl_uint), &read_mem_id, &size_ret));
+    CHECK_EQUAL(0, read_mem_id); 
+  }
 
   ACL_LOCKED(CHECK_EQUAL(acl_bind_buffer_to_device(m_cq->device, a), 1));