[Bug c++/84349] [6/7/8 Regression] ICE with auto in function cast

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84349

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-02-13
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.  The ICE originated with r202540 in GCC 4.9.0:

r202540 | abutcher | 2013-09-12 17:04:52 -0400 (Thu, 12 Sep 2013) | 31 lines

Support using 'auto' in a function parameter list to introduce an implicit
template parameter.

Prior to that, GCC would error out with:

t.C:2:19: error: parameter declared ‘auto’
 int i = (*(int(*)(auto)) p)(0);
                   ^
t.C:2:30: error: too many arguments to function
 int i = (*(int(*)(auto)) p)(0);
                              ^