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d8dbf7ca0e
Make `FatalErrorMarker` lower priority than other panics This makes `FatalErrorMarker` lower priority than other panics in a parallel sections. If any other panics occur, they will be unwound instead of `FatalErrorMarker`. This ensures `rustc` will exit with the correct error code on ICEs. This fixes https://github.com/rust-lang/rust/issues/116659.
25 lines
701 B
Rust
25 lines
701 B
Rust
/// Used as a return value to signify a fatal error occurred.
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#[derive(Copy, Clone, Debug)]
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#[must_use]
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pub struct FatalError;
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pub use rustc_data_structures::FatalErrorMarker;
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// Don't implement Send on FatalError. This makes it impossible to `panic_any!(FatalError)`.
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// We don't want to invoke the panic handler and print a backtrace for fatal errors.
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impl !Send for FatalError {}
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impl FatalError {
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pub fn raise(self) -> ! {
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std::panic::resume_unwind(Box::new(FatalErrorMarker))
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}
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}
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impl std::fmt::Display for FatalError {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(f, "fatal error")
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}
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}
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impl std::error::Error for FatalError {}
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