f68c28b6ce
Take more advantage of the `isize::MAX` limit in `Layout` Things like `padding_needed_for` are current implemented being super careful to handle things like `Layout::size` potentially being `usize::MAX`. But now that #95295 has happened, that's no longer a concern. It's possible to add two `Layout::size`s together without risking overflow now. So take advantage of that to remove a bunch of checked math that's not actually needed. For example, the round-up-and-add-next-size in `extend` doesn't need any overflow checks at all, just the final check for compatibility with the alignment. (And while I was doing that I made it all unstably const, because there's nothing in `Layout` that's fundamentally runtime-only.) |
||
|---|---|---|
| .. | ||
| alignment.rs | ||
| const_ptr.rs | ||
| metadata.rs | ||
| mod.rs | ||
| mut_ptr.rs | ||
| non_null.rs | ||
| unique.rs | ||