Snap for 8730993 from 06b926d5af978a3f55ee650204905ae411407b64 to mainline-tzdata3-release
Change-Id: Ia929496550afb17cd31b5d43ca77890f76b525b9
diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index aa1c5bb..9ef75e5 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,5 +1,5 @@
{
"git": {
- "sha1": "0a4fdff3b012ed4d4b603800bf971239e5a966ba"
+ "sha1": "4e53e072808815ed6b847c77193c568ee076c29d"
}
}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index 6baaaea..0000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-name: CI
-
-on:
- push:
- branches: [auto]
- pull_request:
- workflow_dispatch:
-
-jobs:
- linux-ci:
- name: Linux
- runs-on: ubuntu-latest
- strategy:
- matrix:
- toolchain: ["stable", "beta", "nightly", "1.36.0"]
- include:
- - toolchain: stable
- env:
- DO_FUZZ: 1
- - toolchain: beta
- env:
- DO_FUZZ: 1
- steps:
- - uses: actions/checkout@v2
-
- - name: Install packages
- run: sudo apt-get install -y binutils-dev libunwind8-dev libcurl4-openssl-dev libelf-dev libdw-dev cmake gcc libiberty-dev
-
- - name: Install toolchain
- uses: actions-rs/toolchain@v1
- with:
- profile: minimal
- toolchain: ${{ matrix.toolchain }}
- override: true
-
- - name: Cargo build
- run: cargo build --verbose
-
- - name: Cargo test
- run: cargo test --verbose
-
- - name: Cargo test w/ serde
- run: cargo test --verbose --features serde
-
- - name: Cargo check w/o default features
- if: matrix.toolchain == 'nightly'
- run: cargo check --verbose --no-default-features
-
- - name: Cargo test w/ union
- if: matrix.toolchain == 'beta'
- run: cargo test --verbose --features union
-
- - name: Cargo test all features
- if: matrix.toolchain == 'nightly'
- run: cargo test --verbose --all-features
-
- - name: Cargo bench
- if: matrix.toolchain == 'nightly'
- run: cargo bench --verbose bench
-
- - name: miri
- if: matrix.toolchain == 'nightly'
- run: bash ./scripts/run_miri.sh
-
- - name: fuzz
- if: env.DO_FUZZ == '1'
- working-directory: fuzz
- run: ./travis_fuzz.sh
-
- build_result:
- name: homu build finished
- runs-on: ubuntu-latest
- needs:
- - "linux-ci"
-
- steps:
- - name: Mark the job as successful
- run: exit 0
- if: success()
- - name: Mark the job as unsuccessful
- run: exit 1
- if: "!success()"
-
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..32fba28
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,37 @@
+language: rust
+addons:
+ apt:
+ update: true
+ packages:
+ - binutils-dev
+ - libunwind8-dev
+ - libcurl4-openssl-dev
+ - libelf-dev
+ - libdw-dev
+ - cmake
+ - gcc
+ - libiberty-dev
+matrix:
+ include:
+ - rust: 1.36.0
+ - rust: nightly
+ - rust: beta
+ env: DO_FUZZ=true
+ - rust: stable
+ env: DO_FUZZ=true
+script: |
+ cargo build --verbose &&
+ cargo test --verbose &&
+ cargo test --verbose --features serde &&
+ ([ $TRAVIS_RUST_VERSION != nightly ] || cargo check --verbose --no-default-features) &&
+ ([ $TRAVIS_RUST_VERSION != beta ] || cargo test --verbose --features union) &&
+ ([ $TRAVIS_RUST_VERSION != nightly ] || cargo test --verbose --all-features) &&
+ ([ $TRAVIS_RUST_VERSION != nightly ] || cargo bench --verbose bench) &&
+ ([ $TRAVIS_RUST_VERSION != nightly ] || bash ./scripts/run_miri.sh) &&
+ if [ "$DO_FUZZ" = true ]
+ then
+ (
+ cd fuzz
+ ./travis-fuzz.sh
+ )
+ fi
diff --git a/Android.bp b/Android.bp
index b82f929..cdf2b8d 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,4 @@
-// This file is generated by cargo2android.py --config cargo2android.json.
+// This file is generated by cargo2android.py --device --run --dependencies --patch=patches/Android.bp.patch.
// Do not modify this file as changes will be overridden on upgrade.
package {
@@ -41,14 +41,10 @@
name: "libsmallvec",
host_supported: true,
crate_name: "smallvec",
- cargo_env_compat: true,
- cargo_pkg_version: "1.8.0",
srcs: ["src/lib.rs"],
edition: "2018",
apex_available: [
"//apex_available:platform",
- "com.android.bluetooth",
"com.android.virt",
],
- min_sdk_version: "29",
}
diff --git a/Cargo.toml b/Cargo.toml
index 7ff65de..1759894 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,16 +3,17 @@
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies.
+# to registry (e.g., crates.io) dependencies
#
-# If you are reading this file be aware that the original Cargo.toml
-# will likely look very different (and much more reasonable).
-# See Cargo.toml.orig for the original contents.
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
[package]
edition = "2018"
name = "smallvec"
-version = "1.8.0"
+version = "1.6.1"
authors = ["The Servo Project Developers"]
description = "'Small vector' optimization: store up to a small number of items on the stack"
documentation = "https://docs.rs/smallvec/"
@@ -21,13 +22,6 @@
categories = ["data-structures"]
license = "MIT/Apache-2.0"
repository = "https://github.com/servo/rust-smallvec"
-[package.metadata.docs.rs]
-all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
-[dependencies.arbitrary]
-version = "1"
-optional = true
-
[dependencies.serde]
version = "1"
optional = true
@@ -37,7 +31,6 @@
[features]
const_generics = []
-const_new = ["const_generics"]
may_dangle = []
specialization = []
union = []
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index 605fdb3..b19b93e 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,6 +1,6 @@
[package]
name = "smallvec"
-version = "1.8.0"
+version = "1.6.1"
edition = "2018"
authors = ["The Servo Project Developers"]
license = "MIT/Apache-2.0"
@@ -13,7 +13,6 @@
[features]
const_generics = []
-const_new = ["const_generics"]
write = []
union = []
specialization = []
@@ -21,11 +20,6 @@
[dependencies]
serde = { version = "1", optional = true, default-features = false }
-arbitrary = { version = "1", optional = true }
[dev_dependencies]
bincode = "1.0.1"
-
-[package.metadata.docs.rs]
-all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
diff --git a/METADATA b/METADATA
index e726d44..3ff6a4b 100644
--- a/METADATA
+++ b/METADATA
@@ -7,13 +7,13 @@
}
url {
type: ARCHIVE
- value: "https://static.crates.io/crates/smallvec/smallvec-1.8.0.crate"
+ value: "https://static.crates.io/crates/smallvec/smallvec-1.6.1.crate"
}
- version: "1.8.0"
+ version: "1.6.1"
license_type: NOTICE
last_upgrade_date {
- year: 2022
- month: 3
- day: 1
+ year: 2021
+ month: 1
+ day: 8
}
}
diff --git a/TEST_MAPPING b/TEST_MAPPING
index b91be4d..33c9578 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,48 +1,8 @@
-// Generated by update_crate_tests.py for tests that depend on this crate.
+// Generated by cargo2android.py for tests in Android.bp
{
- "imports": [
- {
- "path": "external/rust/crates/parking_lot_core"
- },
- {
- "path": "external/rust/crates/tinyvec"
- },
- {
- "path": "external/rust/crates/vulkano"
- }
- ],
"presubmit": [
{
- "name": "ZipFuseTest"
- },
- {
- "name": "authfs_device_test_src_lib"
- },
- {
- "name": "keystore2_test"
- },
- {
- "name": "legacykeystore_test"
- },
- {
- "name": "virtualizationservice_device_test"
- }
- ],
- "presubmit-rust": [
- {
- "name": "ZipFuseTest"
- },
- {
- "name": "authfs_device_test_src_lib"
- },
- {
- "name": "keystore2_test"
- },
- {
- "name": "legacykeystore_test"
- },
- {
- "name": "virtualizationservice_device_test"
+ "name": "parking_lot_core_device_test_src_lib"
}
]
}
diff --git a/benches/bench.rs b/benches/bench.rs
index ad73226..7a3c07e 100644
--- a/benches/bench.rs
+++ b/benches/bench.rs
@@ -159,11 +159,12 @@
b.iter(|| {
let mut vec = V::new();
- // Always insert at position 0 so that we are subject to shifts of
- // many different lengths.
+ // Add one element, with each iteration we insert one before the end.
+ // This means that we benchmark the insertion operation and not the
+ // time it takes to `ptr::copy` the data.
vec.push(0);
for x in 0..n {
- insert_noinline(&mut vec, 0, x);
+ insert_noinline(&mut vec, x as _, x);
}
vec
});
@@ -178,8 +179,8 @@
b.iter(|| {
let mut vec = V::from_elem(0, n as _);
- for _ in 0..n {
- remove_noinline(&mut vec, 0);
+ for x in (0..n - 1).rev() {
+ remove_noinline(&mut vec, x);
}
});
}
diff --git a/cargo2android.json b/cargo2android.json
deleted file mode 100644
index 8159be1..0000000
--- a/cargo2android.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
- "apex-available": [
- "//apex_available:platform",
- "com.android.bluetooth",
- "com.android.virt"
- ],
- "dependencies": true,
- "device": true,
- "min-sdk-version": "29",
- "run": true
-}
diff --git a/patches/Android.bp.patch b/patches/Android.bp.patch
new file mode 100644
index 0000000..5943f32
--- /dev/null
+++ b/patches/Android.bp.patch
@@ -0,0 +1,13 @@
+diff --git a/Android.bp b/Android.bp
+index e99d7e0..12fdabd 100644
+--- a/Android.bp
++++ b/Android.bp
+@@ -42,4 +42,8 @@ rust_library {
+ crate_name: "smallvec",
+ srcs: ["src/lib.rs"],
+ edition: "2018",
++ apex_available: [
++ "//apex_available:platform",
++ "com.android.virt",
++ ],
+ }
diff --git a/src/arbitrary.rs b/src/arbitrary.rs
deleted file mode 100644
index cbdfcb0..0000000
--- a/src/arbitrary.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-use crate::{Array, SmallVec};
-use arbitrary::{Arbitrary, Unstructured};
-
-impl<'a, A: Array> Arbitrary<'a> for SmallVec<A>
-where
- <A as Array>::Item: Arbitrary<'a>,
-{
- fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
- u.arbitrary_iter()?.collect()
- }
-
- fn arbitrary_take_rest(u: Unstructured<'a>) -> arbitrary::Result<Self> {
- u.arbitrary_take_rest_iter()?.collect()
- }
-
- fn size_hint(depth: usize) -> (usize, Option<usize>) {
- arbitrary::size_hint::and(<usize as Arbitrary>::size_hint(depth), (0, None))
- }
-}
diff --git a/src/lib.rs b/src/lib.rs
index 1699a71..5e9de82 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -43,18 +43,12 @@
//!
//! ### `const_generics`
//!
-//! **This feature requires Rust 1.51.**
+//! **This feature is unstable and requires a nightly build of the Rust toolchain.**
//!
//! When this feature is enabled, `SmallVec` works with any arrays of any size, not just a fixed
//! list of sizes.
//!
-//! ### `const_new`
-//!
-//! **This feature requires Rust 1.51.**
-//!
-//! This feature exposes the functions [`SmallVec::new_const`], [`SmallVec::from_const`], and [`smallvec_inline`] which enables the `SmallVec` to be initialized from a const context.
-//! For details, see the
-//! [Rust Reference](https://doc.rust-lang.org/reference/const_eval.html#const-functions).
+//! Tracking issue: [rust-lang/rust#44580](https://github.com/rust-lang/rust/issues/44580)
//!
//! ### `specialization`
//!
@@ -77,7 +71,6 @@
//! Tracking issue: [rust-lang/rust#34761](https://github.com/rust-lang/rust/issues/34761)
#![no_std]
-#![cfg_attr(docsrs, feature(doc_cfg))]
#![cfg_attr(feature = "specialization", allow(incomplete_features))]
#![cfg_attr(feature = "specialization", feature(specialization))]
#![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
@@ -179,52 +172,6 @@
});
}
-/// Creates an inline [`SmallVec`] containing the arguments. This macro is enabled by the feature `const_new`.
-///
-/// `smallvec_inline!` allows `SmallVec`s to be defined with the same syntax as array expressions in `const` contexts.
-/// The inline storage `A` will always be an array of the size specified by the arguments.
-/// There are two forms of this macro:
-///
-/// - Create a [`SmallVec`] containing a given list of elements:
-///
-/// ```
-/// # #[macro_use] extern crate smallvec;
-/// # use smallvec::SmallVec;
-/// # fn main() {
-/// const V: SmallVec<[i32; 3]> = smallvec_inline![1, 2, 3];
-/// assert_eq!(V[0], 1);
-/// assert_eq!(V[1], 2);
-/// assert_eq!(V[2], 3);
-/// # }
-/// ```
-///
-/// - Create a [`SmallVec`] from a given element and size:
-///
-/// ```
-/// # #[macro_use] extern crate smallvec;
-/// # use smallvec::SmallVec;
-/// # fn main() {
-/// const V: SmallVec<[i32; 3]> = smallvec_inline![1; 3];
-/// assert_eq!(V, SmallVec::from_buf([1, 1, 1]));
-/// # }
-/// ```
-///
-/// Note that the behavior mimics that of array expressions, in contrast to [`smallvec`].
-#[cfg(feature = "const_new")]
-#[cfg_attr(docsrs, doc(cfg(feature = "const_new")))]
-#[macro_export]
-macro_rules! smallvec_inline {
- // count helper: transform any expression into 1
- (@one $x:expr) => (1usize);
- ($elem:expr; $n:expr) => ({
- $crate::SmallVec::<[_; $n]>::from_const([$elem; $n])
- });
- ($($x:expr),+ $(,)?) => ({
- const N: usize = 0usize $(+ $crate::smallvec_inline!(@one $x))*;
- $crate::SmallVec::<[_; N]>::from_const([$($x,)*])
- });
-}
-
/// `panic!()` in debug builds, optimization hint in release.
#[cfg(not(feature = "union"))]
macro_rules! debug_unreachable {
@@ -408,17 +355,6 @@
heap: (*mut A::Item, usize),
}
-#[cfg(all(feature = "union", feature = "const_new"))]
-impl<T, const N: usize> SmallVecData<[T; N]> {
- #[cfg_attr(docsrs, doc(cfg(feature = "const_new")))]
- #[inline]
- const fn from_const(inline: MaybeUninit<[T; N]>) -> Self {
- SmallVecData {
- inline: core::mem::ManuallyDrop::new(inline),
- }
- }
-}
-
#[cfg(feature = "union")]
impl<A: Array> SmallVecData<A> {
#[inline]
@@ -459,15 +395,6 @@
Heap((*mut A::Item, usize)),
}
-#[cfg(all(not(feature = "union"), feature = "const_new"))]
-impl<T, const N: usize> SmallVecData<[T; N]> {
- #[cfg_attr(docsrs, doc(cfg(feature = "const_new")))]
- #[inline]
- const fn from_const(inline: MaybeUninit<[T; N]>) -> Self {
- SmallVecData::Inline(inline)
- }
-}
-
#[cfg(not(feature = "union"))]
impl<A: Array> SmallVecData<A> {
#[inline]
@@ -556,7 +483,7 @@
/// Construct an empty vector
#[inline]
pub fn new() -> SmallVec<A> {
- // Try to detect invalid custom implementations of `Array`. Hopefully,
+ // Try to detect invalid custom implementations of `Array`. Hopefuly,
// this check should be optimized away entirely for valid ones.
assert!(
mem::size_of::<A>() == A::size() * mem::size_of::<A::Item>()
@@ -798,11 +725,11 @@
let len = self.len();
let start = match range.start_bound() {
Included(&n) => n,
- Excluded(&n) => n.checked_add(1).expect("Range start out of bounds"),
+ Excluded(&n) => n + 1,
Unbounded => 0,
};
let end = match range.end_bound() {
- Included(&n) => n.checked_add(1).expect("Range end out of bounds"),
+ Included(&n) => n + 1,
Excluded(&n) => n,
Unbounded => len,
};
@@ -1562,7 +1489,6 @@
}
#[cfg(feature = "write")]
-#[cfg_attr(docsrs, doc(cfg(feature = "write")))]
impl<A: Array<Item = u8>> io::Write for SmallVec<A> {
#[inline]
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
@@ -1583,7 +1509,6 @@
}
#[cfg(feature = "serde")]
-#[cfg_attr(docsrs, doc(cfg(feature = "serde")))]
impl<A: Array> Serialize for SmallVec<A>
where
A::Item: Serialize,
@@ -1598,7 +1523,6 @@
}
#[cfg(feature = "serde")]
-#[cfg_attr(docsrs, doc(cfg(feature = "serde")))]
impl<'de, A: Array> Deserialize<'de> for SmallVec<A>
where
A::Item: Deserialize<'de>,
@@ -1651,9 +1575,6 @@
#[cfg(feature = "specialization")]
mod specialization;
-#[cfg(feature = "arbitrary")]
-mod arbitrary;
-
#[cfg(feature = "specialization")]
impl<'a, A: Array> SpecFrom<A, &'a [A::Item]> for SmallVec<A>
where
@@ -1806,21 +1727,6 @@
fn clone(&self) -> SmallVec<A> {
SmallVec::from(self.as_slice())
}
-
- fn clone_from(&mut self, source: &Self) {
- // Inspired from `impl Clone for Vec`.
-
- // drop anything that will not be overwritten
- self.truncate(source.len());
-
- // self.len <= other.len due to the truncate above, so the
- // slices here are always in-bounds.
- let (init, tail) = source.split_at(self.len());
-
- // reuse the contained values' allocations/resources.
- self.clone_from_slice(init);
- self.extend(tail.iter().cloned());
- }
}
impl<A: Array, B: Array> PartialEq<SmallVec<B>> for SmallVec<A>
@@ -2031,35 +1937,7 @@
}
}
-#[cfg(feature = "const_new")]
-impl<T, const N: usize> SmallVec<[T; N]> {
- /// Construct an empty vector.
- ///
- /// This is a `const` version of [`SmallVec::new`] that is enabled by the feature `const_new`, with the limitation that it only works for arrays.
- #[cfg_attr(docsrs, doc(cfg(feature = "const_new")))]
- #[inline]
- pub const fn new_const() -> Self {
- SmallVec {
- capacity: 0,
- data: SmallVecData::from_const(MaybeUninit::uninit()),
- }
- }
-
- /// The array passed as an argument is moved to be an inline version of `SmallVec`.
- ///
- /// This is a `const` version of [`SmallVec::from_buf`] that is enabled by the feature `const_new`, with the limitation that it only works for arrays.
- #[cfg_attr(docsrs, doc(cfg(feature = "const_new")))]
- #[inline]
- pub const fn from_const(items: [T; N]) -> Self {
- SmallVec {
- capacity: N,
- data: SmallVecData::from_const(MaybeUninit::new(items)),
- }
- }
-}
-
-#[cfg(all(feature = "const_generics", not(doc)))]
-#[cfg_attr(docsrs, doc(cfg(feature = "const_generics")))]
+#[cfg(feature = "const_generics")]
unsafe impl<T, const N: usize> Array for [T; N] {
type Item = T;
fn size() -> usize {
@@ -2067,7 +1945,7 @@
}
}
-#[cfg(any(not(feature = "const_generics"), doc))]
+#[cfg(not(feature = "const_generics"))]
macro_rules! impl_array(
($($size:expr),+) => {
$(
@@ -2079,7 +1957,7 @@
}
);
-#[cfg(any(not(feature = "const_generics"), doc))]
+#[cfg(not(feature = "const_generics"))]
impl_array!(
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
26, 27, 28, 29, 30, 31, 32, 36, 0x40, 0x60, 0x80, 0x100, 0x200, 0x400, 0x600, 0x800, 0x1000,
diff --git a/src/tests.rs b/src/tests.rs
index 7643fd7..19f6da8 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -111,13 +111,6 @@
assert_eq!(v.drain(1..).collect::<Vec<_>>(), &[4, 5]);
// drain should not change the capacity
assert_eq!(v.capacity(), old_capacity);
-
- // Exercise the tail-shifting code when in the inline state
- // This has the potential to produce UB due to aliasing
- let mut v: SmallVec<[u8; 2]> = SmallVec::new();
- v.push(1);
- v.push(2);
- assert_eq!(v.drain(..1).collect::<Vec<_>>(), &[1]);
}
#[test]
@@ -431,13 +424,6 @@
}
#[test]
-#[should_panic]
-fn drain_overflow() {
- let mut v: SmallVec<[u8; 8]> = smallvec![0];
- v.drain(..=std::usize::MAX);
-}
-
-#[test]
fn test_insert_from_slice() {
let mut v: SmallVec<[u8; 8]> = SmallVec::new();
for x in 0..4 {
@@ -910,35 +896,6 @@
let _v = SmallVec::<[i32; 987]>::default();
}
-#[cfg(feature = "const_new")]
-#[test]
-fn const_new() {
- let v = const_new_inner();
- assert_eq!(v.capacity(), 4);
- assert_eq!(v.len(), 0);
- let v = const_new_inline_sized();
- assert_eq!(v.capacity(), 4);
- assert_eq!(v.len(), 4);
- assert_eq!(v[0], 1);
- let v = const_new_inline_args();
- assert_eq!(v.capacity(), 2);
- assert_eq!(v.len(), 2);
- assert_eq!(v[0], 1);
- assert_eq!(v[1], 4);
-}
-#[cfg(feature = "const_new")]
-const fn const_new_inner() -> SmallVec<[i32; 4]> {
- SmallVec::<[i32; 4]>::new_const()
-}
-#[cfg(feature = "const_new")]
-const fn const_new_inline_sized() -> SmallVec<[i32; 4]> {
- crate::smallvec_inline![1; 4]
-}
-#[cfg(feature = "const_new")]
-const fn const_new_inline_args() -> SmallVec<[i32; 2]> {
- crate::smallvec_inline![1, 4]
-}
-
#[test]
fn empty_macro() {
let _v: SmallVec<[u8; 1]> = smallvec![];
@@ -961,25 +918,3 @@
v.insert_many(0, iter);
assert_eq!(&*v, &[0, 2, 4, 123]);
}
-
-#[test]
-fn test_clone_from() {
- let mut a: SmallVec<[u8; 2]> = SmallVec::new();
- a.push(1);
- a.push(2);
- a.push(3);
-
- let mut b: SmallVec<[u8; 2]> = SmallVec::new();
- b.push(10);
-
- let mut c: SmallVec<[u8; 2]> = SmallVec::new();
- c.push(20);
- c.push(21);
- c.push(22);
-
- a.clone_from(&b);
- assert_eq!(&*a, &[10]);
-
- b.clone_from(&c);
- assert_eq!(&*b, &[20, 21, 22]);
-}
