fb80c73fb3
Most arena-allocate types that impl `Drop` get their own `TypedArena`, but a few infrequently used ones share a `DropArena`. This sharing adds complexity but doesn't help performance or memory usage. Perhaps it was more effective in the past prior to some other improvements to arenas. This commit removes `DropArena` and the sharing of arenas via the `few` attribute of the `arena_types` macro. This change removes over 100 lines of code and nine uses of `unsafe` (one of which affects the parallel compiler) and makes the remaining code easier to read. |
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| Cargo.toml | ||