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Switch BufMut::bytes_mut to&mut UninitSlice (#433)

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The way BufMut uses MaybeUninit can lead to unsoundness. This replaces
MaybeUnit with a type owned by bytes so we can ensure the usage patterns
are sound.

Refs: #328
This commit is contained in:
Carl Lerche
2020-10-19 15:48:23 -07:00
committed by GitHub
parent 79842672f4
commit 14b4e28a5f
8 changed files with 241 additions and 47 deletions
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tests/test_bytes.rs
+2 -2
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@@ -912,12 +912,12 @@ fn bytes_buf_mut_advance() {
let mut bytes = BytesMut::with_capacity(1024);
unsafe {
let ptr = bytes.bytes_mut().as_ptr();
let ptr = bytes.bytes_mut().as_mut_ptr();
assert_eq!(1024, bytes.bytes_mut().len());
bytes.advance_mut(10);
let next = bytes.bytes_mut().as_ptr();
let next = bytes.bytes_mut().as_mut_ptr();
assert_eq!(1024 - 10, bytes.bytes_mut().len());
assert_eq!(ptr.offset(10), next);