ices/79495.sh: fixed with errors

[github-actions]

Issue: rust-lang/rust#79495

#!/bin/bash

cat > out.rs <<'EOF'
#![feature(arbitrary_enum_discriminant, generic_const_exprs, core_intrinsics)]

extern crate core;
use core::intrinsics::discriminant_value;

#[repr(usize)]
enum MyWeirdOption<T> {
    None = 0,
    Some(T) = std::mem::size_of::<T>(),
    //~^ ERROR constant expression depends on a generic parameter
}

fn main() {
    assert_eq!(discriminant_value(&MyWeirdOption::<u8>::None), 0);
    assert_eq!(discriminant_value(&MyWeirdOption::Some(0u8)), 1);
}

EOF

rustdoc --edition=2021 out.rs

=== stdout ===
=== stderr ===
error: generic parameters may not be used in enum discriminant values
 --> out.rs:9:35
  |
9 |     Some(T) = std::mem::size_of::<T>(),
  |                                   ^ cannot perform const operation using `T`
  |
  = note: type parameters may not be used in enum discriminant values

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> out.rs:1:41
  |
1 | #![feature(arbitrary_enum_discriminant, generic_const_exprs, core_intrinsics)]
  |                                         ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
  = note: `#[warn(incomplete_features)]` on by default

error[E0433]: failed to resolve: could not resolve path `T`
 --> out.rs:9:35
  |
9 |     Some(T) = std::mem::size_of::<T>(),
  |                                   ^ could not resolve path `T`
  |
  = note: this error was originally ignored because you are running `rustdoc`
  = note: try running again with `rustc` or `cargo check` and you may get a more detailed error

error: aborting due to 2 previous errors; 1 warning emitted

For more information about this error, try `rustc --explain E0433`.
==============