Struct std::io::WriterPanicked
1.56.0 · source · [−]pub struct WriterPanicked { /* private fields */ }
Expand description
Error returned for the buffered data from BufWriter::into_parts
, when the underlying
writer has previously panicked. Contains the (possibly partly written) buffered data.
Example
use std::io::{self, BufWriter, Write};
use std::panic::{catch_unwind, AssertUnwindSafe};
struct PanickingWriter;
impl Write for PanickingWriter {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> { panic!() }
fn flush(&mut self) -> io::Result<()> { panic!() }
}
let mut stream = BufWriter::new(PanickingWriter);
write!(stream, "some data").unwrap();
let result = catch_unwind(AssertUnwindSafe(|| {
stream.flush().unwrap()
}));
assert!(result.is_err());
let (recovered_writer, buffered_data) = stream.into_parts();
assert!(matches!(recovered_writer, PanickingWriter));
assert_eq!(buffered_data.unwrap_err().into_inner(), b"some data");
RunImplementations
sourceimpl WriterPanicked
impl WriterPanicked
Trait Implementations
sourceimpl Debug for WriterPanicked
impl Debug for WriterPanicked
sourceimpl Display for WriterPanicked
impl Display for WriterPanicked
sourceimpl Error for WriterPanicked
impl Error for WriterPanicked
sourcefn description(&self) -> &str
fn description(&self) -> &str
👎 Deprecated since 1.42.0:
use the Display impl or to_string()
1.30.0 · sourcefn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
The lower-level source of this error, if any. Read more
Auto Trait Implementations
impl RefUnwindSafe for WriterPanicked
impl Send for WriterPanicked
impl Sync for WriterPanicked
impl Unpin for WriterPanicked
impl UnwindSafe for WriterPanicked
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more