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Rollup of 3 pull requests - #163379

Merged

rust-bors[bot] merged 13 commits into

rust-lang:mainfrom

JonathanBrouwer:rollup-TObNVuH

Sep 26, 2026

Merged

Rollup of 3 pull requests#163379
rust-bors[bot] merged 13 commits into
rust-lang:mainfrom
JonathanBrouwer:rollup-TObNVuH

Commits on Sep 22, 2026
- BTree: make dropping an empty BTreeMap free
  jakedrew
  committed
  0109ed2
- Adding codegen for the empty BTree drop
  jakedrew
  committed
  756abe8
- BTree: documenting the unsafe in the empty map drop
  jakedrew
  committed
  15831b0
- Check for dealloc instead of dying_next
  jakedrew
  committed
  70ff620
Commits on Sep 23, 2026
- Checking that an empty BTreeMap drop compiles down to only a `ret void`,
  jakedrew
  committed
  4cf035f
- Adding safety comment on the unsafe in BTreeMap drop
  jakedrew
  committed
  9c77e1e
Commits on Sep 25, 2026
- Comment that `dying_next` is too costly to inline
  jakedrew
  committed
  d432494
Commits on Sep 26, 2026