tbaeder added a comment.

In D151300#4367884 <https://reviews.llvm.org/D151300#4367884>, @aaron.ballman 
wrote:

> LGTM, but it's worth noting that `std::string::pop_back()` calls `erase()` 
> and there's no guarantee that there's not an extra allocation involved as a 
> result. However, I've not seen evidence that STLs actually do an allocation 
> (looking at libc++ and MSVC STL, they don't appear to allocate), so I think 
> this is fine.

Is the allocation only relevant for performance reasons or something else?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151300/new/

https://reviews.llvm.org/D151300

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