[Bug c++/89743] [concepts] ICE when using decltype(requires-expr) as type template parameter

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89743

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-checking
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-03-17
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
GCC 8 gives:

c.cc:5:23: error: expected nested-name-specifier
 using type = typename use_type<decltype(requires() {
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         1;
         ~~             
 })>;
 ~~~

But I think that might be because my GCC 8 builds use --enable-checking=release