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implicitly grow BytesMut; add BufMutExt::chain_mut (#316)

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This brings `BytesMut` in line with `Vec<u8>` behavior.

This also fixes an existing bug in BytesMut::bytes_mut that exposes
invalid slices. The bug was recently introduced and was only on master
and never released to `crates.io`.

In order to fix a test, `BufMutExt::chain_mut` is provided. Withou this,
it is not possible to chain two `&mut [u8]`.

Closes #170
This commit is contained in:
Carl Lerche
2019-11-20 12:11:40 -08:00
committed by GitHub
parent 59aea9e871
commit 8135c1f606
6 changed files with 88 additions and 27 deletions
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tests/test_buf_mut.rs
+1 -1
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@@ -74,7 +74,7 @@ fn test_bufs_vec_mut() {
// with no capacity
let mut buf = BytesMut::new();
assert_eq!(buf.capacity(), 0);
assert_eq!(0, buf.bytes_vectored_mut(&mut dst[..]));
assert_eq!(1, buf.bytes_vectored_mut(&mut dst[..]));
// with capacity
let mut buf = BytesMut::with_capacity(64);