Delete ctr-std to use my fork of the rust repo instead

1 files changed, 0 insertions, 682 deletions

diff --git a/ctr-std/src/io/cursor.rs b/ctr-std/src/io/cursor.rs
deleted file mode 100644
index 14f2015..0000000
--- a/ctr-std/src/io/cursor.rs
+++ /dev/null
@@ -1,682 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use io::prelude::*;
-
-use core::convert::TryInto;
-use cmp;
-use io::{self, Initializer, SeekFrom, Error, ErrorKind};
-
-/// A `Cursor` wraps an in-memory buffer and provides it with a
-/// [`Seek`] implementation.
-///
-/// `Cursor`s are used with in-memory buffers, anything implementing
-/// `AsRef<[u8]>`, to allow them to implement [`Read`] and/or [`Write`],
-/// allowing these buffers to be used anywhere you might use a reader or writer
-/// that does actual I/O.
-///
-/// The standard library implements some I/O traits on various types which
-/// are commonly used as a buffer, like `Cursor<`[`Vec`]`<u8>>` and
-/// `Cursor<`[`&[u8]`][bytes]`>`.
-///
-/// # Examples
-///
-/// We may want to write bytes to a [`File`] in our production
-/// code, but use an in-memory buffer in our tests. We can do this with
-/// `Cursor`:
-///
-/// [`Seek`]: trait.Seek.html
-/// [`Read`]: ../../std/io/trait.Read.html
-/// [`Write`]: ../../std/io/trait.Write.html
-/// [`Vec`]: ../../std/vec/struct.Vec.html
-/// [bytes]: ../../std/primitive.slice.html
-/// [`File`]: ../fs/struct.File.html
-///
-/// ```no_run
-/// use std::io::prelude::*;
-/// use std::io::{self, SeekFrom};
-/// use std::fs::File;
-///
-/// // a library function we've written
-/// fn write_ten_bytes_at_end<W: Write + Seek>(writer: &mut W) -> io::Result<()> {
-///     writer.seek(SeekFrom::End(-10))?;
-///
-///     for i in 0..10 {
-///         writer.write(&[i])?;
-///     }
-///
-///     // all went well
-///     Ok(())
-/// }
-///
-/// # fn foo() -> io::Result<()> {
-/// // Here's some code that uses this library function.
-/// //
-/// // We might want to use a BufReader here for efficiency, but let's
-/// // keep this example focused.
-/// let mut file = File::create("foo.txt")?;
-///
-/// write_ten_bytes_at_end(&mut file)?;
-/// # Ok(())
-/// # }
-///
-/// // now let's write a test
-/// #[test]
-/// fn test_writes_bytes() {
-///     // setting up a real File is much slower than an in-memory buffer,
-///     // let's use a cursor instead
-///     use std::io::Cursor;
-///     let mut buff = Cursor::new(vec![0; 15]);
-///
-///     write_ten_bytes_at_end(&mut buff).unwrap();
-///
-///     assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
-/// }
-/// ```
-#[stable(feature = "rust1", since = "1.0.0")]
-#[derive(Clone, Debug)]
-pub struct Cursor<T> {
-    inner: T,
-    pos: u64,
-}
-
-impl<T> Cursor<T> {
-    /// Creates a new cursor wrapping the provided underlying in-memory buffer.
-    ///
-    /// Cursor initial position is `0` even if underlying buffer (e.g. `Vec`)
-    /// is not empty. So writing to cursor starts with overwriting `Vec`
-    /// content, not with appending to it.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    ///
-    /// let buff = Cursor::new(Vec::new());
-    /// # fn force_inference(_: &Cursor<Vec<u8>>) {}
-    /// # force_inference(&buff);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn new(inner: T) -> Cursor<T> {
-        Cursor { pos: 0, inner: inner }
-    }
-
-    /// Consumes this cursor, returning the underlying value.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    ///
-    /// let buff = Cursor::new(Vec::new());
-    /// # fn force_inference(_: &Cursor<Vec<u8>>) {}
-    /// # force_inference(&buff);
-    ///
-    /// let vec = buff.into_inner();
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn into_inner(self) -> T { self.inner }
-
-    /// Gets a reference to the underlying value in this cursor.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    ///
-    /// let buff = Cursor::new(Vec::new());
-    /// # fn force_inference(_: &Cursor<Vec<u8>>) {}
-    /// # force_inference(&buff);
-    ///
-    /// let reference = buff.get_ref();
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn get_ref(&self) -> &T { &self.inner }
-
-    /// Gets a mutable reference to the underlying value in this cursor.
-    ///
-    /// Care should be taken to avoid modifying the internal I/O state of the
-    /// underlying value as it may corrupt this cursor's position.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    ///
-    /// let mut buff = Cursor::new(Vec::new());
-    /// # fn force_inference(_: &Cursor<Vec<u8>>) {}
-    /// # force_inference(&buff);
-    ///
-    /// let reference = buff.get_mut();
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn get_mut(&mut self) -> &mut T { &mut self.inner }
-
-    /// Returns the current position of this cursor.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    /// use std::io::prelude::*;
-    /// use std::io::SeekFrom;
-    ///
-    /// let mut buff = Cursor::new(vec![1, 2, 3, 4, 5]);
-    ///
-    /// assert_eq!(buff.position(), 0);
-    ///
-    /// buff.seek(SeekFrom::Current(2)).unwrap();
-    /// assert_eq!(buff.position(), 2);
-    ///
-    /// buff.seek(SeekFrom::Current(-1)).unwrap();
-    /// assert_eq!(buff.position(), 1);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn position(&self) -> u64 { self.pos }
-
-    /// Sets the position of this cursor.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::io::Cursor;
-    ///
-    /// let mut buff = Cursor::new(vec![1, 2, 3, 4, 5]);
-    ///
-    /// assert_eq!(buff.position(), 0);
-    ///
-    /// buff.set_position(2);
-    /// assert_eq!(buff.position(), 2);
-    ///
-    /// buff.set_position(4);
-    /// assert_eq!(buff.position(), 4);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    pub fn set_position(&mut self, pos: u64) { self.pos = pos; }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> io::Seek for Cursor<T> where T: AsRef<[u8]> {
-    fn seek(&mut self, style: SeekFrom) -> io::Result<u64> {
-        let (base_pos, offset) = match style {
-            SeekFrom::Start(n) => { self.pos = n; return Ok(n); }
-            SeekFrom::End(n) => (self.inner.as_ref().len() as u64, n),
-            SeekFrom::Current(n) => (self.pos, n),
-        };
-        let new_pos = if offset >= 0 {
-            base_pos.checked_add(offset as u64)
-        } else {
-            base_pos.checked_sub((offset.wrapping_neg()) as u64)
-        };
-        match new_pos {
-            Some(n) => {self.pos = n; Ok(self.pos)}
-            None => Err(Error::new(ErrorKind::InvalidInput,
-                           "invalid seek to a negative or overflowing position"))
-        }
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> Read for Cursor<T> where T: AsRef<[u8]> {
-    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
-        let n = Read::read(&mut self.fill_buf()?, buf)?;
-        self.pos += n as u64;
-        Ok(n)
-    }
-
-    fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
-        let n = buf.len();
-        Read::read_exact(&mut self.fill_buf()?, buf)?;
-        self.pos += n as u64;
-        Ok(())
-    }
-
-    #[inline]
-    unsafe fn initializer(&self) -> Initializer {
-        Initializer::nop()
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<T> BufRead for Cursor<T> where T: AsRef<[u8]> {
-    fn fill_buf(&mut self) -> io::Result<&[u8]> {
-        let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64);
-        Ok(&self.inner.as_ref()[(amt as usize)..])
-    }
-    fn consume(&mut self, amt: usize) { self.pos += amt as u64; }
-}
-
-// Non-resizing write implementation
-fn slice_write(pos_mut: &mut u64, slice: &mut [u8], buf: &[u8]) -> io::Result<usize> {
-    let pos = cmp::min(*pos_mut, slice.len() as u64);
-    let amt = (&mut slice[(pos as usize)..]).write(buf)?;
-    *pos_mut += amt as u64;
-    Ok(amt)
-}
-
-// Resizing write implementation
-fn vec_write(pos_mut: &mut u64, vec: &mut Vec<u8>, buf: &[u8]) -> io::Result<usize> {
-    let pos: usize = (*pos_mut).try_into().map_err(|_| {
-        Error::new(ErrorKind::InvalidInput,
-                    "cursor position exceeds maximum possible vector length")
-    })?;
-    // Make sure the internal buffer is as least as big as where we
-    // currently are
-    let len = vec.len();
-    if len < pos {
-        // use `resize` so that the zero filling is as efficient as possible
-        vec.resize(pos, 0);
-    }
-    // Figure out what bytes will be used to overwrite what's currently
-    // there (left), and what will be appended on the end (right)
-    {
-        let space = vec.len() - pos;
-        let (left, right) = buf.split_at(cmp::min(space, buf.len()));
-        vec[pos..pos + left.len()].copy_from_slice(left);
-        vec.extend_from_slice(right);
-    }
-
-    // Bump us forward
-    *pos_mut = (pos + buf.len()) as u64;
-    Ok(buf.len())
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl<'a> Write for Cursor<&'a mut [u8]> {
-    #[inline]
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        slice_write(&mut self.pos, self.inner, buf)
-    }
-    fn flush(&mut self) -> io::Result<()> { Ok(()) }
-}
-
-#[stable(feature = "cursor_mut_vec", since = "1.25.0")]
-impl<'a> Write for Cursor<&'a mut Vec<u8>> {
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        vec_write(&mut self.pos, self.inner, buf)
-    }
-    fn flush(&mut self) -> io::Result<()> { Ok(()) }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl Write for Cursor<Vec<u8>> {
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        vec_write(&mut self.pos, &mut self.inner, buf)
-    }
-    fn flush(&mut self) -> io::Result<()> { Ok(()) }
-}
-
-#[stable(feature = "cursor_box_slice", since = "1.5.0")]
-impl Write for Cursor<Box<[u8]>> {
-    #[inline]
-    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
-        slice_write(&mut self.pos, &mut self.inner, buf)
-    }
-    fn flush(&mut self) -> io::Result<()> { Ok(()) }
-}
-
-#[cfg(test)]
-mod tests {
-    use io::prelude::*;
-    use io::{Cursor, SeekFrom};
-
-    #[test]
-    fn test_vec_writer() {
-        let mut writer = Vec::new();
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-        assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
-        assert_eq!(writer, b);
-    }
-
-    #[test]
-    fn test_mem_writer() {
-        let mut writer = Cursor::new(Vec::new());
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-        assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
-        assert_eq!(&writer.get_ref()[..], b);
-    }
-
-    #[test]
-    fn test_mem_mut_writer() {
-        let mut vec = Vec::new();
-        let mut writer = Cursor::new(&mut vec);
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-        assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
-        assert_eq!(&writer.get_ref()[..], b);
-    }
-
-    #[test]
-    fn test_box_slice_writer() {
-        let mut writer = Cursor::new(vec![0u8; 9].into_boxed_slice());
-        assert_eq!(writer.position(), 0);
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.position(), 1);
-        assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-        assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-        assert_eq!(writer.position(), 8);
-        assert_eq!(writer.write(&[]).unwrap(), 0);
-        assert_eq!(writer.position(), 8);
-
-        assert_eq!(writer.write(&[8, 9]).unwrap(), 1);
-        assert_eq!(writer.write(&[10]).unwrap(), 0);
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
-        assert_eq!(&**writer.get_ref(), b);
-    }
-
-    #[test]
-    fn test_buf_writer() {
-        let mut buf = [0 as u8; 9];
-        {
-            let mut writer = Cursor::new(&mut buf[..]);
-            assert_eq!(writer.position(), 0);
-            assert_eq!(writer.write(&[0]).unwrap(), 1);
-            assert_eq!(writer.position(), 1);
-            assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-            assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-            assert_eq!(writer.position(), 8);
-            assert_eq!(writer.write(&[]).unwrap(), 0);
-            assert_eq!(writer.position(), 8);
-
-            assert_eq!(writer.write(&[8, 9]).unwrap(), 1);
-            assert_eq!(writer.write(&[10]).unwrap(), 0);
-        }
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7, 8];
-        assert_eq!(buf, b);
-    }
-
-    #[test]
-    fn test_buf_writer_seek() {
-        let mut buf = [0 as u8; 8];
-        {
-            let mut writer = Cursor::new(&mut buf[..]);
-            assert_eq!(writer.position(), 0);
-            assert_eq!(writer.write(&[1]).unwrap(), 1);
-            assert_eq!(writer.position(), 1);
-
-            assert_eq!(writer.seek(SeekFrom::Start(2)).unwrap(), 2);
-            assert_eq!(writer.position(), 2);
-            assert_eq!(writer.write(&[2]).unwrap(), 1);
-            assert_eq!(writer.position(), 3);
-
-            assert_eq!(writer.seek(SeekFrom::Current(-2)).unwrap(), 1);
-            assert_eq!(writer.position(), 1);
-            assert_eq!(writer.write(&[3]).unwrap(), 1);
-            assert_eq!(writer.position(), 2);
-
-            assert_eq!(writer.seek(SeekFrom::End(-1)).unwrap(), 7);
-            assert_eq!(writer.position(), 7);
-            assert_eq!(writer.write(&[4]).unwrap(), 1);
-            assert_eq!(writer.position(), 8);
-
-        }
-        let b: &[_] = &[1, 3, 2, 0, 0, 0, 0, 4];
-        assert_eq!(buf, b);
-    }
-
-    #[test]
-    fn test_buf_writer_error() {
-        let mut buf = [0 as u8; 2];
-        let mut writer = Cursor::new(&mut buf[..]);
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.write(&[0, 0]).unwrap(), 1);
-        assert_eq!(writer.write(&[0, 0]).unwrap(), 0);
-    }
-
-    #[test]
-    fn test_mem_reader() {
-        let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7]);
-        let mut buf = [];
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-        assert_eq!(reader.position(), 0);
-        let mut buf = [0];
-        assert_eq!(reader.read(&mut buf).unwrap(), 1);
-        assert_eq!(reader.position(), 1);
-        let b: &[_] = &[0];
-        assert_eq!(buf, b);
-        let mut buf = [0; 4];
-        assert_eq!(reader.read(&mut buf).unwrap(), 4);
-        assert_eq!(reader.position(), 5);
-        let b: &[_] = &[1, 2, 3, 4];
-        assert_eq!(buf, b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 3);
-        let b: &[_] = &[5, 6, 7];
-        assert_eq!(&buf[..3], b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-    }
-
-    #[test]
-    fn test_boxed_slice_reader() {
-        let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7].into_boxed_slice());
-        let mut buf = [];
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-        assert_eq!(reader.position(), 0);
-        let mut buf = [0];
-        assert_eq!(reader.read(&mut buf).unwrap(), 1);
-        assert_eq!(reader.position(), 1);
-        let b: &[_] = &[0];
-        assert_eq!(buf, b);
-        let mut buf = [0; 4];
-        assert_eq!(reader.read(&mut buf).unwrap(), 4);
-        assert_eq!(reader.position(), 5);
-        let b: &[_] = &[1, 2, 3, 4];
-        assert_eq!(buf, b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 3);
-        let b: &[_] = &[5, 6, 7];
-        assert_eq!(&buf[..3], b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-    }
-
-    #[test]
-    fn read_to_end() {
-        let mut reader = Cursor::new(vec![0, 1, 2, 3, 4, 5, 6, 7]);
-        let mut v = Vec::new();
-        reader.read_to_end(&mut v).unwrap();
-        assert_eq!(v, [0, 1, 2, 3, 4, 5, 6, 7]);
-    }
-
-    #[test]
-    fn test_slice_reader() {
-        let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
-        let reader = &mut &in_buf[..];
-        let mut buf = [];
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-        let mut buf = [0];
-        assert_eq!(reader.read(&mut buf).unwrap(), 1);
-        assert_eq!(reader.len(), 7);
-        let b: &[_] = &[0];
-        assert_eq!(&buf[..], b);
-        let mut buf = [0; 4];
-        assert_eq!(reader.read(&mut buf).unwrap(), 4);
-        assert_eq!(reader.len(), 3);
-        let b: &[_] = &[1, 2, 3, 4];
-        assert_eq!(&buf[..], b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 3);
-        let b: &[_] = &[5, 6, 7];
-        assert_eq!(&buf[..3], b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-    }
-
-    #[test]
-    fn test_read_exact() {
-        let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
-        let reader = &mut &in_buf[..];
-        let mut buf = [];
-        assert!(reader.read_exact(&mut buf).is_ok());
-        let mut buf = [8];
-        assert!(reader.read_exact(&mut buf).is_ok());
-        assert_eq!(buf[0], 0);
-        assert_eq!(reader.len(), 7);
-        let mut buf = [0, 0, 0, 0, 0, 0, 0];
-        assert!(reader.read_exact(&mut buf).is_ok());
-        assert_eq!(buf, [1, 2, 3, 4, 5, 6, 7]);
-        assert_eq!(reader.len(), 0);
-        let mut buf = [0];
-        assert!(reader.read_exact(&mut buf).is_err());
-    }
-
-    #[test]
-    fn test_buf_reader() {
-        let in_buf = vec![0, 1, 2, 3, 4, 5, 6, 7];
-        let mut reader = Cursor::new(&in_buf[..]);
-        let mut buf = [];
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-        assert_eq!(reader.position(), 0);
-        let mut buf = [0];
-        assert_eq!(reader.read(&mut buf).unwrap(), 1);
-        assert_eq!(reader.position(), 1);
-        let b: &[_] = &[0];
-        assert_eq!(buf, b);
-        let mut buf = [0; 4];
-        assert_eq!(reader.read(&mut buf).unwrap(), 4);
-        assert_eq!(reader.position(), 5);
-        let b: &[_] = &[1, 2, 3, 4];
-        assert_eq!(buf, b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 3);
-        let b: &[_] = &[5, 6, 7];
-        assert_eq!(&buf[..3], b);
-        assert_eq!(reader.read(&mut buf).unwrap(), 0);
-    }
-
-    #[test]
-    fn seek_past_end() {
-        let buf = [0xff];
-        let mut r = Cursor::new(&buf[..]);
-        assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
-        assert_eq!(r.read(&mut [0]).unwrap(), 0);
-
-        let mut r = Cursor::new(vec![10]);
-        assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
-        assert_eq!(r.read(&mut [0]).unwrap(), 0);
-
-        let mut buf = [0];
-        let mut r = Cursor::new(&mut buf[..]);
-        assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
-        assert_eq!(r.write(&[3]).unwrap(), 0);
-
-        let mut r = Cursor::new(vec![10].into_boxed_slice());
-        assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
-        assert_eq!(r.write(&[3]).unwrap(), 0);
-    }
-
-    #[test]
-    fn seek_past_i64() {
-        let buf = [0xff];
-        let mut r = Cursor::new(&buf[..]);
-        assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
-        assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
-        assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
-        assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
-        assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
-        assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
-
-        let mut r = Cursor::new(vec![10]);
-        assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
-        assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
-        assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
-        assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
-        assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
-        assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
-
-        let mut buf = [0];
-        let mut r = Cursor::new(&mut buf[..]);
-        assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
-        assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
-        assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
-        assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
-        assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
-        assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
-
-        let mut r = Cursor::new(vec![10].into_boxed_slice());
-        assert_eq!(r.seek(SeekFrom::Start(6)).unwrap(), 6);
-        assert_eq!(r.seek(SeekFrom::Current(0x7ffffffffffffff0)).unwrap(), 0x7ffffffffffffff6);
-        assert_eq!(r.seek(SeekFrom::Current(0x10)).unwrap(), 0x8000000000000006);
-        assert_eq!(r.seek(SeekFrom::Current(0)).unwrap(), 0x8000000000000006);
-        assert!(r.seek(SeekFrom::Current(0x7ffffffffffffffd)).is_err());
-        assert_eq!(r.seek(SeekFrom::Current(-0x8000000000000000)).unwrap(), 6);
-    }
-
-    #[test]
-    fn seek_before_0() {
-        let buf = [0xff];
-        let mut r = Cursor::new(&buf[..]);
-        assert!(r.seek(SeekFrom::End(-2)).is_err());
-
-        let mut r = Cursor::new(vec![10]);
-        assert!(r.seek(SeekFrom::End(-2)).is_err());
-
-        let mut buf = [0];
-        let mut r = Cursor::new(&mut buf[..]);
-        assert!(r.seek(SeekFrom::End(-2)).is_err());
-
-        let mut r = Cursor::new(vec![10].into_boxed_slice());
-        assert!(r.seek(SeekFrom::End(-2)).is_err());
-    }
-
-    #[test]
-    fn test_seekable_mem_writer() {
-        let mut writer = Cursor::new(Vec::<u8>::new());
-        assert_eq!(writer.position(), 0);
-        assert_eq!(writer.write(&[0]).unwrap(), 1);
-        assert_eq!(writer.position(), 1);
-        assert_eq!(writer.write(&[1, 2, 3]).unwrap(), 3);
-        assert_eq!(writer.write(&[4, 5, 6, 7]).unwrap(), 4);
-        assert_eq!(writer.position(), 8);
-        let b: &[_] = &[0, 1, 2, 3, 4, 5, 6, 7];
-        assert_eq!(&writer.get_ref()[..], b);
-
-        assert_eq!(writer.seek(SeekFrom::Start(0)).unwrap(), 0);
-        assert_eq!(writer.position(), 0);
-        assert_eq!(writer.write(&[3, 4]).unwrap(), 2);
-        let b: &[_] = &[3, 4, 2, 3, 4, 5, 6, 7];
-        assert_eq!(&writer.get_ref()[..], b);
-
-        assert_eq!(writer.seek(SeekFrom::Current(1)).unwrap(), 3);
-        assert_eq!(writer.write(&[0, 1]).unwrap(), 2);
-        let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 7];
-        assert_eq!(&writer.get_ref()[..], b);
-
-        assert_eq!(writer.seek(SeekFrom::End(-1)).unwrap(), 7);
-        assert_eq!(writer.write(&[1, 2]).unwrap(), 2);
-        let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2];
-        assert_eq!(&writer.get_ref()[..], b);
-
-        assert_eq!(writer.seek(SeekFrom::End(1)).unwrap(), 10);
-        assert_eq!(writer.write(&[1]).unwrap(), 1);
-        let b: &[_] = &[3, 4, 2, 0, 1, 5, 6, 1, 2, 0, 1];
-        assert_eq!(&writer.get_ref()[..], b);
-    }
-
-    #[test]
-    fn vec_seek_past_end() {
-        let mut r = Cursor::new(Vec::new());
-        assert_eq!(r.seek(SeekFrom::Start(10)).unwrap(), 10);
-        assert_eq!(r.write(&[3]).unwrap(), 1);
-    }
-
-    #[test]
-    fn vec_seek_before_0() {
-        let mut r = Cursor::new(Vec::new());
-        assert!(r.seek(SeekFrom::End(-2)).is_err());
-    }
-
-    #[test]
-    #[cfg(target_pointer_width = "32")]
-    fn vec_seek_and_write_past_usize_max() {
-        let mut c = Cursor::new(Vec::new());
-        c.set_position(<usize>::max_value() as u64 + 1);
-        assert!(c.write_all(&[1, 2, 3]).is_err());
-    }
-}