mirror of https://github.com/rust-lang/rust
44 lines
875 B
Rust
44 lines
875 B
Rust
//@ compile-flags: -C opt-level=0
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#![crate_type = "lib"]
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pub enum ApiError {}
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#[allow(dead_code)]
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pub struct TokioError {
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b: bool,
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}
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pub enum Error {
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Api {
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source: ApiError,
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},
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Ethereum,
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Tokio {
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source: TokioError,
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},
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}
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struct Api;
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impl IntoError<Error> for Api
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{
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type Source = ApiError;
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// CHECK-LABEL: @into_error
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// CHECK: llvm.trap()
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// Also check the next two instructions to make sure we do not match against `trap`
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// elsewhere in the code.
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// CHECK-NEXT: load
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// CHECK-NEXT: ret
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#[no_mangle]
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fn into_error(self, error: Self::Source) -> Error {
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Error::Api {
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source: error,
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}
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}
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}
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pub trait IntoError<E>
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{
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/// The underlying error
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type Source;
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/// Combine the information to produce the error
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fn into_error(self, source: Self::Source) -> E;
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}
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