Nicholas Nethercote 3ce3436fd6 Disallow ZST allocations with TypedArena. ...

`DroplessArena::alloc` already disallows ZST allocation.
`TypedArena::alloc` allows it but:
- (a) it's never used, and
- (b) writing to `NonNull::dangling()` seems dubious, even if the write
  is zero-sized.

This commit just changes it to panic on a ZST. This eliminates an
untested code path, and we shouldn't be allocating ZSTs anyway.
It also eliminates an unused ZST code path in `clear_last_chunk`.
Tests are also updated accordingly.

2026-04-15 20:03:07 +10:00

..

src

Disallow ZST allocations with TypedArena.

2026-04-15 20:03:07 +10:00

Cargo.toml

Revert "Use workspace lints for crates in compiler/ #138084"

2025-03-10 18:12:47 +08:00