https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52625
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |11.0
Summary|[8/9/10/11 Regression] |[8/9/10 Regression]
|Incorrect specialization |Incorrect specialization
|semantics of friend class |semantics of friend class
|template declaration |template declaration
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 11 so far.