[pytorch] fix ConstRefCType usage in codegen/api/native.py (#50742)

ljk53 · facebook-github-bot · commit 24fd84313f01 · 2021-01-20T15:01:37.000-08:00
Summary: Pull Request resolved: #50742 Fixed the other usage of `BaseCType('const ...&)` on #49138. Checked byte-for-byte compatibility of the codegen output. Test Plan: Imported from OSS Reviewed By: ezyang Differential Revision: D25955565 Pulled By: ljk53 fbshipit-source-id: 83ebd6b039892b805444867ed97a6e2fa6e72225
diff --git a/tools/codegen/api/native.py b/tools/codegen/api/native.py
@@ -37,7 +37,7 @@ def argumenttype_type(t: Type, *, mutable: bool, binds: ArgName) -> CType:
         else:
             return ConstRefCType(tensor_type)
     elif str(t) == 'Tensor?[]':
-        return BaseCType('const c10::List<c10::optional<Tensor>> &', binds)
+        return ConstRefCType(BaseCType("c10::List<c10::optional<Tensor>>", binds))
     return cpp.argumenttype_type(t, mutable=mutable, binds=binds)
 
 def returns_type(rs: Sequence[Return]) -> str:
