Constant byte index xxx is out of bounds of `` errors (Naga)

[hakolao]

Apologies for a not so helpful bug report, but perhaps you know what was changed in naga in 22.0 (or previous version).

I recreate my pipelines using on_uncaptured_error (hot reload), and quite often now I get following kinds of panics:

[2024-09-17T11:35:14Z ERROR wgpu_core::device::global] Device::create_shader_module error:
    Shader validation error:
      ┌─ Combine shader:1:1
      │
    1 │
      │
      │
      │ naga::Expression [42]
      │ naga::Function [13]


thread 'main' panicked at C:\...\.cargo\registry\src\index.crates.io-6f17d22bba15001f\naga-22.1.0\src\span.rs:73:29:
byte index 4424 is out of bounds of ``

I don't think this should happen, because previously I just got the error nicely printed out and I could keep changing my shaders and running my hot-reloads.

Some errors don't cause this, others do.