https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81122
Paul A. Bristow <pbristow at hetp dot u-net.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pbristow at hetp dot u-net.com --- Comment #18 from Paul A. Bristow <pbristow at hetp dot u-net.com> --- Working on test for Boost.Multiprecision UDTs, I have just stumbled on this, expecting loopback to 'just work' as it does on Clang libc++ and MSVC. LWG 2381 is still (currently open) and seems to have stalled? Is there any way to get this resolved for GCC libstd++?