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Use nightly features #11

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Use nightly features #11

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@madsmtm madsmtm commented Jun 2, 2021

Builds upon #7.

Uses nightly features to:

  • Make calling throw no longer UB
  • Remove the extra build stage by handling exceptions directly in Rust

Mostly submitted this for prosperity, core_intrinsics won't get stabilized so Rust will need some changes before we can do this on stable. I opened an issue on the internals forum here, so maybe that could get the ball rolling a bit.

But I could add the C-unwind as an unstable feature if you'd like?

Uses the same implementation as `std::panic::catch_unwind`, with small modifications to extract the exception object from Objective-C.
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