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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.//!  This example shows that op-panics currently result in UB (likely "failed to initiate panic")//!  without a custom panic hook that aborts the process or -C panic=abort.//!//!  This happens due to the UB of panicking in an extern "C",//!  given how ops are reduced via rusty_v8::MapFnTo//!  See://!    - https://github.com/rust-lang/rust/issues/74990//!    - https://rust-lang.github.io/rfcs/2945-c-unwind-abi.html
use deno_core::op;use deno_core::Extension;use deno_core::JsRuntime;use deno_core::RuntimeOptions;
// This is a hack to make the `#[op]` macro work with// deno_core examples.// You can remove this:use deno_core::*;
fn main() {  #[op]  fn op_panik() {    panic!("panik !!!")  }
  let extensions =    vec![Extension::builder().ops(vec![op_panik::decl()]).build()];  let mut rt = JsRuntime::new(RuntimeOptions {    extensions,    ..Default::default()  });  rt.execute_script("panik", "Deno.core.ops.op_panik()")    .unwrap();}