[Bug c++/123691] Expansion statements are implemented but do not work.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123691
Bug 123691 depends on bug 123379, which changed state.

Bug 123379 Summary: constexpr template for does not work with temporary object
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123379

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED