[gcc r11-10134] libstdc++: Add noexcept to std::launch operators

[Jonathan Wakely]

https://gcc.gnu.org/g:7f66dfbe4cba07458e224486e0dd6ff1ece321d3

commit r11-10134-g7f66dfbe4cba07458e224486e0dd6ff1ece321d3
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu May 12 19:33:58 2022 +0100

    libstdc++: Add noexcept to std::launch operators
    
    libstdc++-v3/ChangeLog:
    
            * include/std/future (launch): Make operators noexcept.
    
    (cherry picked from commit 8659bcd6b7e692a9a516cd57bb19303a2efe78ba)

Diff:
---
 libstdc++-v3/include/std/future | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/libstdc++-v3/include/std/future b/libstdc++-v3/include/std/future
index f5d8da472f5..88478860c7d 100644
--- a/libstdc++-v3/include/std/future
+++ b/libstdc++-v3/include/std/future
@@ -139,34 +139,34 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     deferred = 2
   };
 
-  constexpr launch operator&(launch __x, launch __y)
+  constexpr launch operator&(launch __x, launch __y) noexcept
   {
     return static_cast<launch>(
 	static_cast<int>(__x) & static_cast<int>(__y));
   }
 
-  constexpr launch operator|(launch __x, launch __y)
+  constexpr launch operator|(launch __x, launch __y) noexcept
   {
     return static_cast<launch>(
 	static_cast<int>(__x) | static_cast<int>(__y));
   }
 
-  constexpr launch operator^(launch __x, launch __y)
+  constexpr launch operator^(launch __x, launch __y) noexcept
   {
     return static_cast<launch>(
 	static_cast<int>(__x) ^ static_cast<int>(__y));
   }
 
-  constexpr launch operator~(launch __x)
+  constexpr launch operator~(launch __x) noexcept
   { return static_cast<launch>(~static_cast<int>(__x)); }
 
-  inline launch& operator&=(launch& __x, launch __y)
+  inline launch& operator&=(launch& __x, launch __y) noexcept
   { return __x = __x & __y; }
 
-  inline launch& operator|=(launch& __x, launch __y)
+  inline launch& operator|=(launch& __x, launch __y) noexcept
   { return __x = __x | __y; }
 
-  inline launch& operator^=(launch& __x, launch __y)
+  inline launch& operator^=(launch& __x, launch __y) noexcept
   { return __x = __x ^ __y; }
 
   /// Status code for futures