[Bug c++/80242] [C++17+] "Trailing return types" with "non-type template arguments" which could be "constant expressions" produce a parsing error

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80242

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-08-12
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
           Keywords|                            |rejects-valid
            Summary|"Trailing return types"     |[C++17+] "Trailing return
                   |with "non-type template     |types" with "non-type
                   |arguments" which could be   |template arguments" which
                   |"constant expressions"      |could be "constant
                   |produce a parsing error     |expressions" produce a
                   |                            |parsing error

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed for C++17+.  lambdas are only constexpr in C++17+.