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// compile-flags: -C opt-level=0 | ||
#![crate_type = "lib"] | ||
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pub enum ApiError {} | ||
#[allow(dead_code)] | ||
pub struct TokioError { | ||
b: bool, | ||
} | ||
pub enum Error { | ||
Api { | ||
source: ApiError, | ||
}, | ||
Ethereum, | ||
Tokio { | ||
source: TokioError, | ||
}, | ||
} | ||
struct Api; | ||
impl IntoError<Error> for Api | ||
{ | ||
type Source = ApiError; | ||
// CHECK-LABEL: @into_error | ||
// CHECK: unreachable | ||
// Also check the next two instructions to make sure we do not match against `unreachable` | ||
// elsewhere in the code (e.g., in the closure bode). | ||
// CHECK-NEXT: load | ||
// CHECK-NEXT: ret | ||
#[no_mangle] | ||
fn into_error(self, error: Self::Source) -> Error { | ||
Error::Api { | ||
source: (|v| v)(error), | ||
} | ||
} | ||
} | ||
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pub trait IntoError<E> | ||
{ | ||
/// The underlying error | ||
type Source; | ||
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/// Combine the information to produce the error | ||
fn into_error(self, source: Self::Source) -> E; | ||
} |