thakis added a comment.

> That's referring to the fact that once we allocate new `DirectoryLookup` with 
> `SpecificBumpPtrAllocator`, address of that object won't change (unlike with 
> `std::vector`). This means that we can take the address and use it without 
> worrying about invalidation.

Ah, "stable" made me think of iteration order, but that's not what you meant. 
Makes sense, thanks!


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D116750/new/

https://reviews.llvm.org/D116750

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