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Remove unsafe from TypedArena::alloc_raw_slice.

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There's no good reason for it.
This commit is contained in:
Nicholas Nethercote 2023-09-20 07:36:19 +10:00
parent 55de23ed5d
commit 51edc21990
1 changed files with 4 additions and 4 deletions
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8
compiler/rustc_arena/src/lib.rs
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@ -172,8 +172,8 @@ fn alloc_from_iter(self, arena: &TypedArena<T>) -> &mut [T] {
return &mut [];
}
// Move the content to the arena by copying and then forgetting it.
let start_ptr = arena.alloc_raw_slice(len);
unsafe {
let start_ptr = arena.alloc_raw_slice(len);
self.as_slice().as_ptr().copy_to_nonoverlapping(start_ptr, len);
mem::forget(self);
slice::from_raw_parts_mut(start_ptr, len)
@ -189,8 +189,8 @@ fn alloc_from_iter(mut self, arena: &TypedArena<T>) -> &mut [T] {
return &mut [];
}
// Move the content to the arena by copying and then forgetting it.
let start_ptr = arena.alloc_raw_slice(len);
unsafe {
let start_ptr = arena.alloc_raw_slice(len);
self.as_ptr().copy_to_nonoverlapping(start_ptr, len);
self.set_len(0);
slice::from_raw_parts_mut(start_ptr, len)
@ -206,8 +206,8 @@ fn alloc_from_iter(mut self, arena: &TypedArena<A::Item>) -> &mut [A::Item] {
return &mut [];
}
// Move the content to the arena by copying and then forgetting it.
let start_ptr = arena.alloc_raw_slice(len);
unsafe {
let start_ptr = arena.alloc_raw_slice(len);
self.as_ptr().copy_to_nonoverlapping(start_ptr, len);
self.set_len(0);
slice::from_raw_parts_mut(start_ptr, len)
@ -251,7 +251,7 @@ fn can_allocate(&self, additional: usize) -> bool {
}
#[inline]
unsafe fn alloc_raw_slice(&self, len: usize) -> *mut T {
fn alloc_raw_slice(&self, len: usize) -> *mut T {
assert!(mem::size_of::<T>() != 0);
assert!(len != 0);