[Bug c++/89357] alignas for automatic variables with alignment greater than 16 fails

[kretz at kde dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357

--- Comment #2 from Matthias Kretz <kretz at kde dot org> ---
I agree. The corresponding C test case produces equivalent f0 and f1:

void g(int*);

void f0() {
  __attribute__((aligned(128))) int x;
  g(&x);
}

void f1() {
  _Alignas(128) int x;
  g(&x);
}

And I agree this PR is rejects-valid. Unless there's some very strange rule for
ARM and thus _Alignas is supposed to also reject values greater 16?