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Fix use of unstable library feature #9

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Merged
merged 1 commit into from
Jan 22, 2018

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cmontella
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@cmontella cmontella commented Jan 21, 2018

Tried compiling with rust nightly (1/21/18) and got the following error:

error[E0658]: use of unstable library feature 'ptr_internals': use NonNull instead and consider PhantomData<T> (if you also use #[may_dangle]), Send, and/or Sync (see issue #0)
 --> ~/.cargo/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.4.3/src/hole.rs:1:5
  |
1 | use core::ptr::Unique;
  |     ^^^^^^^^^^^^^^^^^
  |
  = help: add #![feature(ptr_internals)] to the crate attributes to enable

The proposed fix should turn off this warning, but goes against the advice presented in the error to use NonNull and PhantomData.

Tried compiling with rust nightly (1/21/18) and got the following error:

```
error[E0658]: use of unstable library feature 'ptr_internals': use NonNull instead and consider PhantomData<T> (if you also use #[may_dangle]), Send, and/or Sync (see issue #0)
 --> /home/hivemind/.cargo/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.4.3/src/hole.rs:1:5
  |
1 | use core::ptr::Unique;
  |     ^^^^^^^^^^^^^^^^^
  |
  = help: add #![feature(ptr_internals)] to the crate attributes to enable
```

The proposed fix should turn off this warning, but goes against the advice presented in the error to use NonNull and PhantomData<T>.
@phil-opp phil-opp merged commit 658e58c into rust-osdev:master Jan 22, 2018
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Thanks! I decided to merge it to get the library compiling again. I try to replace the uses of ptr::Unique soon.

@phil-opp
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I replaced all uses of Unique with mutable references in a4bf336. Published as 0.5.0.

@cmontella
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Awesome, thanks for the fix!

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