commit e72d49c1d5d79902dfd159778247204f3ea95ae8
author jasonliu <jasonliu.development@gmail.com> Wed Mar 24 22:31:58 2021 +0000
committer Copybara-Service <copybara-worker@google.com> Thu Mar 25 13:30:54 2021 -0700
tree d46480f2474206d78bd18220af0bf7da3ef7aac0
parent 460be323959523112f9bd16c81e531c7bda39272

[libc++] Match declaration for non-member function std::swap(std::packaged_task) with what standard specify

Standard specifies:
```
template<class R, class... ArgTypes>
  void swap(packaged_task<R(ArgTypes...)>& x, packaged_task<R(ArgTypes...)>& y) noexcept;
```

Differential Revision: https://reviews.llvm.org/D99102

GitOrigin-RevId: 09a84d304776cbd97a31fbb0cc8ce772426aaabf

include/future

diff --git a/include/future b/include/future
index db60ab6..40beab1 100644
--- a/include/future
+++ b/include/future
@@ -2126,10 +2126,10 @@
     __p_ = promise<result_type>();
 }
 
-template <class _Callable>
+template <class _Rp, class... _ArgTypes>
 inline _LIBCPP_INLINE_VISIBILITY
 void
-swap(packaged_task<_Callable>& __x, packaged_task<_Callable>& __y) _NOEXCEPT
+swap(packaged_task<_Rp(_ArgTypes...)>& __x, packaged_task<_Rp(_ArgTypes...)>& __y) _NOEXCEPT
 {
     __x.swap(__y);
 }