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error: remove StringError from Debug output #60897

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Jun 1, 2019
+7 −1
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error: remove StringError from Debug output #60897

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8 changes: 7 additions & 1 deletion src/libstd/error.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -300,7 +300,6 @@ impl From<String> for Box<dyn Error + Send + Sync> {
/// mem::size_of::<Box<dyn Error + Send + Sync>>() == mem::size_of_val(&a_boxed_error))
/// ```
fn from(err: String) -> Box<dyn Error + Send + Sync> {
#[derive(Debug)]
struct StringError(String);

impl Error for StringError {
Expand All @@ -313,6 +312,13 @@ impl From<String> for Box<dyn Error + Send + Sync> {
}
}

// Purposefully skip printing "StringError(..)"
impl Debug for StringError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
Debug::fmt(&self.0, f)
}
}

Box::new(StringError(err))
}
}
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