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Remove source method in no_std mode

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An io error can never occur in no_std mode so the source method is never
applicable.
This commit is contained in:
David Tolnay 2020-01-22 00:02:25 -08:00
parent cf3beee3d2
commit def04dedc1
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GPG Key ID: F9BA143B95FF6D82
2 changed files with 2 additions and 3 deletions
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3
src/error.rs
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@ -334,7 +334,8 @@ impl Display for ErrorCode {
} }
impl serde::de::StdError for Error { impl serde::de::StdError for Error {
fn source(&self) -> Option<&(serde::de::StdError + 'static)> { #[cfg(feature = "std")]
fn source(&self) -> Option<&(error::Error + 'static)> {
match self.err.code { match self.err.code {
ErrorCode::Io(ref err) => Some(err), ErrorCode::Io(ref err) => Some(err),
_ => None, _ => None,

2
src/io/core.rs
View File

@ -22,8 +22,6 @@ impl Debug for Error {
} }
} }
impl serde::de::StdError for Error {}
impl Error { impl Error {
pub(crate) fn new(kind: ErrorKind, error: &'static str) -> Error { pub(crate) fn new(kind: ErrorKind, error: &'static str) -> Error {
let _ = kind; let _ = kind;