[Bug c++/126124] New: ICE on pack expansion through statement expression

[kengusername at proton dot me via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126124

            Bug ID: 126124
           Summary: ICE on pack expansion through statement expression
           Product: gcc
           Version: 16.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kengusername at proton dot me
  Target Milestone: ---

This program fails to compile on gcc 16.1 

https://godbolt.org/z/6jG4dMa4T


```
template<auto = 0> consteval auto foo() {
    int arr[] {};
    ( ({auto [...p] = arr; p;}), ...);
}

static_assert(foo());
```