[Bug c++/99066] [8/9/10/11 Regression] non-weak definition emitted for explicit instantiation declaration

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99066

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> Perhaps caused by PR23691 changes?

r104041, yes.  Bizarre that this went unnoticed for over 15 years.