[Bug c++/102307] [10/11/12 Regression] internal compiler error: in reshape_init_r, at cp/decl.c:6717

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102307

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2021-09-13 00:00:00         |
   Target Milestone|---                         |10.4
            Summary|internal compiler error: in |[10/11/12 Regression]
                   |reshape_init_r, at          |internal compiler error: in
                   |cp/decl.c:6717 since        |reshape_init_r, at
                   |r10-6388-ge98ebda074bf8fc5  |cp/decl.c:6717
             Status|NEW                         |UNCONFIRMED
     Ever confirmed|1                           |0

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is invalid code. Making the code aceppted by clang (and ICC), GCC
does not ICE.

GCC 9 just to produce an error message:
<source>: In function 'int main()':
<source>:7:75: error: call to non-'constexpr' function 'Matrix<N,
M>::Matrix(const double (&)[N][M]) [with unsigned int N = 2; unsigned int M =
3]'
    7 | int main() { constexpr Matrix<2, 3> mat{{{1.0, 2.0, 3.0}, {4.0, 5.0,
6.0}}}; }
      |