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use mutable reference

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This commit is contained in:
Ralf Jung 2020-03-30 13:27:59 +02:00
parent 9159b1eef8
commit ab32084ddb
1 changed files with 3 additions and 3 deletions
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6
tests/run-pass/vec.rs
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@ -74,7 +74,7 @@ fn vec_reallocate() -> Vec<u8> {
fn vec_push_ptr_stable() {
let mut v = Vec::with_capacity(10);
v.push(0);
let v0 = unsafe { &*(&v[0] as *const _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
let v0 = unsafe { &mut *(&mut v[0] as *mut _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
v.push(1);
let _val = *v0;
}
@ -82,7 +82,7 @@ fn vec_push_ptr_stable() {
fn vec_extend_ptr_stable() {
let mut v = Vec::with_capacity(10);
v.push(0);
let v0 = unsafe { &*(&v[0] as *const _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
let v0 = unsafe { &mut *(&mut v[0] as *mut _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
// `slice::Iter` (with `T: Copy`) specialization
v.extend(&[1]);
let _val = *v0;
@ -99,7 +99,7 @@ fn vec_extend_ptr_stable() {
fn vec_truncate_ptr_stable() {
let mut v = vec![0; 10];
let v0 = unsafe { &*(&v[0] as *const _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
let v0 = unsafe { &mut *(&mut v[0] as *mut _) }; // laundering the lifetime -- we take care that `v` does not reallocate, so that's okay.
v.truncate(5);
let _val = *v0;
}