_VSTD macro was removed from libcxx
Upstream commit: https://github.com/ROCm/rocThrust/commit/bc24ef2613e282d57d96dcf4263e2fa2cab171e4
--- a/thrust/type_traits/is_contiguous_iterator.h
+++ b/thrust/type_traits/is_contiguous_iterator.h
@@ -139,7 +139,7 @@ struct is_libcxx_wrap_iter : false_type {};
 #if defined(_LIBCPP_VERSION)
 template <typename Iterator>
 struct is_libcxx_wrap_iter<
-  _VSTD::__wrap_iter<Iterator>
+  std::__wrap_iter<Iterator>
 > : true_type {};
 #endif