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Add a warning about infinite reading in read_(until|line) #72888

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Jun 2, 2020
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Add a warning about infinite reading in read_(until|line) #72888

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8 changes: 8 additions & 0 deletions src/libstd/io/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1883,6 +1883,10 @@ pub trait BufRead: Read {
///
/// If successful, this function will return the total number of bytes read.
///
/// This function is blocking and should be used carefully: it is possible for
/// an attacker to continuously send bytes without ever sending the delimiter
/// or EOF.
///
/// # Errors
///
/// This function will ignore all instances of [`ErrorKind::Interrupted`] and
Expand Down Expand Up @@ -1945,6 +1949,10 @@ pub trait BufRead: Read {
///
/// If this function returns `Ok(0)`, the stream has reached EOF.
///
/// This function is blocking and should be used carefully: it is possible for
/// an attacker to continuously send bytes without ever sending a newline
/// or EOF.
///
/// # Errors
///
/// This function has the same error semantics as [`read_until`] and will
Expand Down