[Bug c++/88146] ice in tsubst_copy, at cp/pt.c:16014

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88146

--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
So, no, it's not a copy ctor, but apparently we're reusing the logic that
synthesizes them for other non-default ctors.