Panic `index out of bounds: the len is 0 but the index is 0` in `core/engine/src/vm/opcode/define/mod.rs`

[qarmin]

Rust code

fn check_file(path: &str) {
    let Ok(file_content) = fs::read(path) else {
        return;
    };
    println!("Checking file: {path}");
    let mut context = Context::default();

    let _result = context.eval(Source::from_bytes(&file_content));
}

when evaluating javascript code(at the bottom should be attached raw, not formatted file - github removes some non-printable characters, so copying from here may not work):

class{constructor(){class D{}}}

crashes with this info:

thread 'main' (189534) panicked at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/opcode/define/mod.rs:82:39:
index out of bounds: the len is 0 but the index is 0
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3ff30e7eafc1da7104c3960187d17939172428ed/library/std/src/panicking.rs:689:5
   1: core::panicking::panic_fmt
             at /rustc/3ff30e7eafc1da7104c3960187d17939172428ed/library/core/src/panicking.rs:80:14
   2: core::panicking::panic_bounds_check
             at /rustc/3ff30e7eafc1da7104c3960187d17939172428ed/library/core/src/panicking.rs:271:5
   3: <usize as core::slice::index::SliceIndex<[core::option::Option<boa_engine::value::JsValue>]>>::index_mut
             at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/slice/index.rs:278:14
   4: <[core::option::Option<boa_engine::value::JsValue>] as core::ops::index::IndexMut<usize>>::index_mut
             at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/slice/index.rs:31:15
   5: <alloc::vec::Vec<core::option::Option<boa_engine::value::JsValue>> as core::ops::index::IndexMut<usize>>::index_mut
             at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/vec/mod.rs:3666:9
   6: <boa_engine::environments::runtime::declarative::PoisonableEnvironment>::set
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/environments/runtime/declarative/mod.rs:310:35
   7: <boa_engine::vm::opcode::define::PutLexicalValue>::operation
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/opcode/define/mod.rs:82:39
   8: boa_engine::vm::opcode::handle_put_lexical_value
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/opcode/mod.rs:313:17
   9: <boa_engine::context::Context>::execute_bytecode_instruction
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/opcode/mod.rs:464:9
  10: <<boa_engine::context::Context>::execute_bytecode_instruction as core::ops::function::FnOnce<(&mut boa_engine::context::Context, boa_engine::vm::opcode::Opcode)>>::call_once
             at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
  11: <boa_engine::context::Context>::execute_instruction::<<boa_engine::context::Context>::execute_bytecode_instruction>
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/mod.rs:640:9
  12: <boa_engine::context::Context>::execute_one::<<boa_engine::context::Context>::execute_bytecode_instruction>
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/mod.rs:666:14
  13: <boa_engine::context::Context>::run
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/vm/mod.rs:850:24
  14: <boa_engine::script::Script>::evaluate
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/script.rs:172:30
  15: <boa_engine::context::Context>::eval::<boa_parser::source::utf8::UTF8Input<&[u8]>>
             at /home/runner/.cargo/git/checkouts/boa-126d820dff07bf57/5cbbb72/core/engine/src/context/mod.rs:204:41
  16: boa::check_file
             at ./src/crates/boa/src/main.rs:33:27
  17: boa::main
             at ./src/crates/boa/src/main.rs:22:9
  18: <fn() as core::ops::function::FnOnce<()>>::call_once
             at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
timeout: the monitored command dumped core

compressed.zip