fix mac build error (#8856)

QiJune · web-flow · commit 47ca1814f3e1 · 2018-03-08T10:44:30.000+08:00
diff --git a/paddle/fluid/inference/tests/test_helper.h b/paddle/fluid/inference/tests/test_helper.h
@@ -110,6 +110,8 @@ void TestInference(const std::string& dirname,
     // Users can get the device_id using:
     //   int device_id = place.GetDeviceId();
     paddle::platform::SetDeviceId(0);
+#else
+    PADDLE_THROW("'CUDAPlace' is not supported in CPU only device.");
 #endif
   }
 

Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,8 @@ void TestInference(const std::string& dirname,`
`110`	`110`	`// Users can get the device_id using:`
`111`	`111`	`// int device_id = place.GetDeviceId();`
`112`	`112`	`paddle::platform::SetDeviceId(0);`
	`113`	`+#else`
	`114`	`+ PADDLE_THROW("'CUDAPlace' is not supported in CPU only device.");`
`113`	`115`	`#endif`
`114`	`116`	`}`
`115`	`117`