//@ compile-flags: -C opt-level=0 #![crate_type = "lib"] 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 for Api { type Source = ApiError; // CHECK-LABEL: @into_error // CHECK: llvm.trap() // Also check the next two instructions to make sure we do not match against `trap` // elsewhere in the code. // CHECK-NEXT: load // CHECK-NEXT: ret #[no_mangle] fn into_error(self, error: Self::Source) -> Error { Error::Api { source: error, } } } pub trait IntoError { /// The underlying error type Source; /// Combine the information to produce the error fn into_error(self, source: Self::Source) -> E; }