Fix a downcast (#47919)

r-barnes · facebook-github-bot · commit c543b3b5827f · 2020-11-13T22:26:29.000-08:00
Summary: Pull Request resolved: #47919 Suppresses a downcast warning. Test Plan: Reproduces with ``` buck test mode/dev-nosan //caffe2/torch/fb/sparsenn:gpu_test ``` Reviewed By: suphoff Differential Revision: D24866987 fbshipit-source-id: 44f19ab37a7d95abe08f570abfebc702827a2510
diff --git a/caffe2/core/operator.h b/caffe2/core/operator.h
@@ -1446,7 +1446,7 @@ C10_DECLARE_REGISTRY(
 // You should not need to use this class.
 struct StaticLinkingProtector {
   StaticLinkingProtector() {
-    const int registered_ops = CPUOperatorRegistry()->Keys().size();
+    const auto registered_ops = CPUOperatorRegistry()->Keys().size();
     // Note: this is a check failure instead of an exception, because if
     // the linking is wrong, Caffe2 won't be able to run properly anyway,
     // so it's better to fail loud.
