Updating the nightly version of rust gives error on module path:

[amiyatulu]

While importing the module it now gives following error:

#[wasm_bindgen(module = "/src/package.js")]
extern "C" {
    #[wasm_bindgen]
    pub fn helloworld();

error: constant evaluation is taking a long time
   --> /home/amiya/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/slice/mod.rs:118:9
    |
118 |         ptr::metadata(self)
    |         ^^^^^^^^^^^^^^^^^^^
    |
    = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
            If your compilation actually takes a long time, you can safely allow the lint.
help: the constant being evaluated
   --> src/js_extension_binding.rs:5:1
    |
5   | #[wasm_bindgen(module = "/src/package.js")]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: `#[deny(long_running_const_eval)]` on by default
    = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant encountered
 --> src/js_extension_binding.rs:5:1
  |
5 | #[wasm_bindgen(module = "/src/package.js")]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: this note originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

[lucasmerlin]

I'm having the same problem, but for me it came after updating wasm_bindgen from 0.2.92 to 0.2.93. So I guess it's a combination of wasm_bindgen 0.2.93 and a recent rust nightly version (I'm using 1.82.0-nightly (2c93fabd9 2024-08-15))?
@amiyatulu do you know which nightly version you were updating from?

[daxpedda]

I'm unable to reproduce it, maybe it was addressed in the latest nightly already?
Let me know if this is still an issue and I can reopen!

[lucasmerlin]

Still happening with the current nightly :/

With 1.83.0-nightly (fa724e5d8 2024-09-27):

error: constant evaluation is taking a long time
   --> /Users/lucasprivat/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/slice/mod.rs:118:9
    |
118 |         ptr::metadata(self)
    |         ^^^^^^^^^^^^^^^^^^^
    |
    = note: this lint makes sure the compiler doesn't get stuck due to infinite loops in const eval.
            If your compilation actually takes a long time, you can safely allow the lint.
help: the constant being evaluated
   --> hp-mobile-interop/src/web.rs:23:3
    |
23  |   #[wasm_bindgen(module = "/js/out/index.js")]
    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: `#[deny(long_running_const_eval)]` on by default
    = note: this error originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant encountered
  --> hp-mobile-interop/src/web.rs:23:3
   |
23 |   #[wasm_bindgen(module = "/js/out/index.js")]
   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this note originates in the attribute macro `wasm_bindgen` (in Nightly builds, run with -Z macro-backtrace for more info)

The js module is quite big (almost 1mb) maybe it's related to that?

[daxpedda]

Thank you for getting back on this, I was able to reproduce it with this.
It should be fixed with #4146.

[lucasmerlin]

Awesome, this fixed it for me!