From 9a3859f1e743a621d2d45ea421df29cf0f61a376 Mon Sep 17 00:00:00 2001
From: Michael Schellenberger Costa <miscco@nvidia.com>
Date: Wed, 1 May 2024 23:24:09 +0200
Subject: [PATCH] Fix unqualified calls to `__swallow`

Fixes [BUG]: libcudacxx clashes w/ libc++: ambiguous overload resolution for `__swallow` #1678
---
 libcudacxx/include/cuda/std/detail/libcxx/include/tuple | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/libcudacxx/include/cuda/std/detail/libcxx/include/tuple b/libcudacxx/include/cuda/std/detail/libcxx/include/tuple
index 22cb1d51fe8..778fa73b80d 100644
--- a/libcudacxx/include/cuda/std/detail/libcxx/include/tuple
+++ b/libcudacxx/include/cuda/std/detail/libcxx/include/tuple
@@ -494,7 +494,7 @@ struct _LIBCUDACXX_DECLSPEC_EMPTY_BASES __tuple_impl<__tuple_indices<_Indx...>,
   _LIBCUDACXX_INLINE_VISIBILITY __tuple_impl& operator=(_Tuple&& __t) noexcept(
     (__all<_LIBCUDACXX_TRAIT(is_nothrow_assignable, _Tp&, __tuple_elem_at<_Tuple, _Indx>)...>::value))
   {
-    __swallow(__tuple_leaf<_Indx, _Tp>::operator=(
+    _CUDA_VSTD::__swallow(__tuple_leaf<_Indx, _Tp>::operator=(
       _CUDA_VSTD::forward<__tuple_elem_at<_Tuple, _Indx>>(_CUDA_VSTD::get<_Indx>(__t)))...);
     return *this;
   }
@@ -505,14 +505,15 @@ struct _LIBCUDACXX_DECLSPEC_EMPTY_BASES __tuple_impl<__tuple_indices<_Indx...>,
   _LIBCUDACXX_INLINE_VISIBILITY __tuple_impl&
   operator=(const __tuple_impl& __t) noexcept((__all<_LIBCUDACXX_TRAIT(is_nothrow_copy_assignable, _Tp)...>::value))
   {
-    __swallow(__tuple_leaf<_Indx, _Tp>::operator=(static_cast<const __tuple_leaf<_Indx, _Tp>&>(__t).get())...);
+    _CUDA_VSTD::__swallow(
+      __tuple_leaf<_Indx, _Tp>::operator=(static_cast<const __tuple_leaf<_Indx, _Tp>&>(__t).get())...);
     return *this;
   }
 
   _LIBCUDACXX_INLINE_VISIBILITY __tuple_impl&
   operator=(__tuple_impl&& __t) noexcept((__all<_LIBCUDACXX_TRAIT(is_nothrow_move_assignable, _Tp)...>::value))
   {
-    __swallow(__tuple_leaf<_Indx, _Tp>::operator=(
+    _CUDA_VSTD::__swallow(__tuple_leaf<_Indx, _Tp>::operator=(
       _CUDA_VSTD::forward<_Tp>(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t).get()))...);
     return *this;
   }
@@ -520,7 +521,7 @@ struct _LIBCUDACXX_DECLSPEC_EMPTY_BASES __tuple_impl<__tuple_indices<_Indx...>,
   _LIBCUDACXX_INLINE_VISIBILITY void
   swap(__tuple_impl& __t) noexcept(__all<__is_nothrow_swappable<_Tp>::value...>::value)
   {
-    __swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...);
+    _CUDA_VSTD::__swallow(__tuple_leaf<_Indx, _Tp>::swap(static_cast<__tuple_leaf<_Indx, _Tp>&>(__t))...);
   }
 };