[Bug c++/86773] GCC accepts junk before fold expressions

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86773

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |accepts-invalid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-08-01
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Complete testcase:

template <typename ... Param>
auto work(Param && ...param)
{
        return ("hi" ... / param);
}

int main()
{
        double d = work(1.0, 2.0, 5, 4.0);
        return (int)d;
}

Compiles without error. Not a regression.