rust/src/liballoc/alloc.rs, branch 1.27.2

Auto merge of #50097 - glandium:box_free, r=nikomatsakis

2018-04-27T12:24:17+00:00

Partial future-proofing for Box In some ways, this is similar to @eddyb's PR #47043 that went stale, but doesn't cover everything. Notably, this still leaves Box internalized as a pointer in places, so practically speaking, only ZSTs can be practically added to the Box type with the changes here (the compiler ICEs otherwise). The Box type is not changed here, that's left for the future because I want to test that further first, but this puts things in place in a way that hopefully will make things easier.

Switch box_free to take the destructured contents of Box

2018-04-25T02:39:07+00:00

As of now, Box only contains a Unique pointer, so this is the sole argument to box_free. Consequently, we remove the code supporting the previous box_free signature. We however keep the old definition for bootstrapping purpose.

Remove Alloc::oom

2018-04-22T17:08:49+00:00

Replace GlobalAlloc::oom with a lang item

2018-04-22T17:08:17+00:00

Rename alloc::Void to alloc::Opaque

2018-04-12T20:53:22+00:00

Remove conversions for allocated pointers

2018-04-12T20:53:22+00:00

One was now unused, and `NonNull::new(…).ok_or(AllocErr)` feels short enough for the few cases that need the other conversion.

Use NonNull instead of *mut u8 in the Alloc trait

2018-04-12T20:53:22+00:00

Fixes #49608

impl GlobalAlloc for Global

2018-04-12T20:53:22+00:00

Restore Global.oom() functionality

2018-04-12T20:53:21+00:00

… now that #[global_allocator] does not define a symbol for it

realloc with a new size only, not a full new layout.

2018-04-12T20:53:13+00:00

Changing the alignment with realloc is not supported.