[gcc r10-9353] libstdc++: Make coroutine_handle<_Promise>::from_address() noexcept [PR 99021]

[Jonathan Wakely]

https://gcc.gnu.org/g:fa183497cf25b604f5b76bc16766f30f5ec7e05b

commit r10-9353-gfa183497cf25b604f5b76bc16766f30f5ec7e05b
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Feb 9 11:23:29 2021 +0000

    libstdc++: Make coroutine_handle<_Promise>::from_address() noexcept [PR 99021]
    
    The coroutine_handle<void>::from_address(void*) version is already
    noexcept, and they do the same thing. Make them consistent.
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/99021
            * include/std/coroutine (coroutine_handle<P>::from_address): Add
            noexcept.
    
    (cherry picked from commit 26a3f288f1895a8c061c0458590542a3d2ee796a)

Diff:
---
 libstdc++-v3/include/std/coroutine | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/std/coroutine b/libstdc++-v3/include/std/coroutine
index 468d1107557..21bdd1b2f04 100644
--- a/libstdc++-v3/include/std/coroutine
+++ b/libstdc++-v3/include/std/coroutine
@@ -197,7 +197,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       }
 
     // 17.12.3.2, export/import
-    constexpr static coroutine_handle from_address(void* __a)
+    constexpr static coroutine_handle from_address(void* __a) noexcept
     {
       coroutine_handle __self;
       __self._M_fr_ptr = __a;