[Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89119

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Aha -- I thought the RANGE_EXPR could have something value-dependent, but as
this shows, it's not the case:

struct S { int a[4]; };

template<int N>
struct R { int a[N]; };

template <typename T>
void
fn ()
{
  constexpr auto s = S();
  constexpr auto r = R<4>();
}

void
foo ()
{
  fn<int>();
}