rustc_span/
fatal_error.rs

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1/// Used as a return value to signify a fatal error occurred.
2#[derive(Copy, Clone, Debug)]
3#[must_use]
4pub struct FatalError;
5
6pub use rustc_data_structures::FatalErrorMarker;
7
8// Don't implement Send on FatalError. This makes it impossible to `panic_any!(FatalError)`.
9// We don't want to invoke the panic handler and print a backtrace for fatal errors.
10impl !Send for FatalError {}
11
12impl FatalError {
13    pub fn raise(self) -> ! {
14        std::panic::resume_unwind(Box::new(FatalErrorMarker))
15    }
16}
17
18impl std::fmt::Display for FatalError {
19    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
20        write!(f, "fatal error")
21    }
22}
23
24impl std::error::Error for FatalError {}
rustc_span/fatal_error.rs

rustc_span/
fatal_error.rs
