https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105720
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
CC| |ppalka at gcc dot gnu.org
Target Milestone|--- |10.4
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
I think you're running into the LWG issue https://wg21.link/lwg3505 which has
been adopted as a defect report against C++20, and implemented for libstdc++
10.4 (not yet released) and 11+ (as you've noticed). It's been backported to
the 10 release branch as r10-9740-g4c17b2bbbc1bef on April 20, 2021, so any
snapshot of libstdc++ 10 after that date should behave correctly.
