[Bug c++/117107] [14/15 Regression] ICE with structured binding and decltype inside a template

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117107

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
      Known to work|                            |13.1.0, 13.3.0
      Known to fail|                            |14.1.0, 14.2.0
            Summary|internal compiler error:    |[14/15 Regression] ICE with
                   |Segmentation fault at       |structured binding and
                   |lookup_decomp_type(tree_nod |decltype inside a template
                   |e*)                         |
   Last reconfirmed|                            |2024-10-13
           Keywords|                            |ice-on-valid-code,
                   |                            |needs-bisection
   Target Milestone|---                         |14.3

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Simplified testcase:
```
struct tuple {
  int a;
};
template <unsigned long I>
void check_tuple_like() {
  tuple t;
  auto [v] = t;
  decltype(v) b;
}
```

Confirmed.