cargo run --example inside wingc panics on Wing files with extern functions

[Chriscbr]

I tried this:

After running pnpm install and compiling everything in the Wing monorepo, I tried running the compiler frontend on an example by changing my directory to libs/wingc and running cargo run --example compile with a path to a Wing file.

This happened:

$ RUST_BACKTRACE=1 cargo run --example compile ../../examples/tests/sdk_tests/util/shell.test.w
    Finished dev [unoptimized + debuginfo] target(s) in 0.06s
     Running `/Users/chrisr/dev/wing2/target/debug/examples/compile ../../examples/tests/sdk_tests/util/shell.test.w`
thread 'main' panicked at libs/wingc/src/jsify.rs:1347:52:
attempt to subtract with overflow
stack backtrace:
   0: rust_begin_unwind
             at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/panicking.rs:595:5
   1: core::panicking::panic_fmt
             at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/panicking.rs:67:14
   2: core::panicking::panic
             at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/panicking.rs:117:5
   3: wingc::jsify::JSifier::jsify_function
             at ./src/jsify.rs:1347:34
   4: wingc::jsify::JSifier::jsify_class_inflight
             at ./src/jsify.rs:1625:20
   5: wingc::jsify::JSifier::jsify_class::{{closure}}
             at ./src/jsify.rs:1412:30
   6: wingc::visit_context::VisitorWithContext::with_class
             at ./src/visit_context.rs:249:13
   7: wingc::jsify::JSifier::jsify_class
             at ./src/jsify.rs:1393:3
   8: wingc::jsify::JSifier::jsify_statement
             at ./src/jsify.rs:1138:44
   9: wingc::jsify::JSifier::jsify
             at ./src/jsify.rs:145:12
  10: wingc::compile
             at ./src/lib.rs:347:3
  11: compile::main
             at ./examples/compile.rs:18:16
  12: core::ops::function::FnOnce::call_once
             at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/ops/function.rs:250:5

I expected this:

No response

Is there a workaround?

No response

Anything else?

No response

Wing Version

0.54.28

Node.js Version

18.16.0

Platform(s)

MacOS

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