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Rust no longer optimizes loops away

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Philipp Oppermann
2022-01-23 21:23:40 +01:00
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blog/content/edition-3/posts/01-minimal-kernel/index.md
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@@ -146,12 +146,6 @@ The [`PanicInfo` parameter][PanicInfo] contains the file and line where the pani
[diverging function]: https://doc.rust-lang.org/1.30.0/book/first-edition/functions.html#diverging-functions
[“never” type]: https://doc.rust-lang.org/nightly/std/primitive.never.html
<div class = "note">
A side note about `loop {}`: There is currently a bug in LLVM (the code generator used by Rust) that [incorrectly optimizes away loops](https://github.com/rust-lang/rust/issues/28728) in some cases. Fortunately, this [no longer applies to empty loops](https://github.com/rust-lang/rust/pull/77972) and should also be [fixed in general](https://github.com/rust-lang/rust/issues/28728#issuecomment-766128831) soon.
</div>
After defining a panic handler, only the `eh_personality` language item error remains:
```