[Bug c++/95949] mame build succeeds with -O3 but fails with -O2 and all -O3 flags added manually

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95949

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2020-06-29
     Ever confirmed|0                           |1

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
What we inline and what not changes across releases, without a testcase
my suspicion is that mame uses extern template but fails to provide
all necessary instantiations.