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-rw-r--r--library/std/src/io/error.rs7
1 files changed, 4 insertions, 3 deletions
diff --git a/library/std/src/io/error.rs b/library/std/src/io/error.rs
index 29b09fcc5..3cabf2449 100644
--- a/library/std/src/io/error.rs
+++ b/library/std/src/io/error.rs
@@ -76,7 +76,6 @@ impl fmt::Debug for Error {
}
}
-#[cfg(not(bootstrap))]
#[stable(feature = "rust1", since = "1.0.0")]
impl From<alloc::ffi::NulError> for Error {
/// Converts a [`alloc::ffi::NulError`] into a [`Error`].
@@ -388,7 +387,7 @@ pub enum ErrorKind {
impl ErrorKind {
pub(crate) fn as_str(&self) -> &'static str {
use ErrorKind::*;
- // Strictly alphabetical, please. (Sadly rustfmt cannot do this yet.)
+ // tidy-alphabetical-start
match *self {
AddrInUse => "address in use",
AddrNotAvailable => "address not available",
@@ -432,6 +431,7 @@ impl ErrorKind {
WouldBlock => "operation would block",
WriteZero => "write zero",
}
+ // tidy-alphabetical-end
}
}
@@ -482,6 +482,7 @@ impl Error {
/// originate from the OS itself. The `error` argument is an arbitrary
/// payload which will be contained in this [`Error`].
///
+ /// Note that this function allocates memory on the heap.
/// If no extra payload is required, use the `From` conversion from
/// `ErrorKind`.
///
@@ -496,7 +497,7 @@ impl Error {
/// // errors can also be created from other errors
/// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error);
///
- /// // creating an error without payload
+ /// // creating an error without payload (and without memory allocation)
/// let eof_error = Error::from(ErrorKind::UnexpectedEof);
/// ```
#[stable(feature = "rust1", since = "1.0.0")]