https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118074
YanzuoLiu <zwuis at outlook dot com> changed:
What |Removed |Added
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CC| |zwuis at outlook dot com
--- Comment #6 from YanzuoLiu <zwuis at outlook dot com> ---
I believe this has undefined behaviour.
When the result object is initialized from `promise.get_return_object()` is
unclear currently (See [cwg2563](https://wg21.link/cwg2563)).
- If it is initialized before calling `promise.return_value()`, `promise.a` is
uninitialized.
- If it is initialized after destroying `promise`,
`promise.get_return_object().p` becomes a dangling pointer.
