[Bug c++/117882] New: SFINAE not respected for array parameters

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117882

            Bug ID: 117882
           Summary: SFINAE not respected for array parameters
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

I think this should compile:

```
//constexpr
int i = 0;

template<int I>
void f (int(*)[i + I]) = delete;

template<int>
void f (...) { }

void
g ()
{
  f<0>(nullptr);
}
```

but we emit:

bug.C:5:6: error: variable or field ‘f’ declared void
    5 | void f (int(*)[i + I]) = delete;
      |      ^
bug.C:5:9: error: expected primary-expression before ‘int’
    5 | void f (int(*)[i + I]) = delete;
      |         ^~~