[PATCH] D91693: [Support] Add reserve() method to the raw_ostream.

[Pavel Labath via Phabricator via llvm-commits]

labath added a comment.

In D91693#2407967 <https://reviews.llvm.org/D91693#2407967>, @avl wrote:

>> Yeah, I suppose that's reasonable. Though, if the scope of this is small (e.g.: it only needs to write to files _or_ memory buffers, and it's not going go have a lot of callers/large surface area), I would not completely dismiss some custom solution either...
>
> This work is done exactly because of scope for custom solution become wider. There is a D88827 <https://reviews.llvm.org/D88827> review which tries to move core implementation of llvm-objcopy into the Object library. So there is a request to avoid using custom solution in favor of more standard one. That is why I am trying to replace custom llvm-objcopy solution(D91028 <https://reviews.llvm.org/D91028>).

Ok, fair enough.

>> I don't think that would be *un*reasonable, but I'd wait until a use case for it shows up.
>
> There is such a use case in D91028 <https://reviews.llvm.org/D91028>
>
>   SmallVector<char, 0> Buffer;
>   raw_svector_ostream MemStream(Buffer);
>   
>   if (Error E = executeObjcopyOnBinary(Config, **ObjOrErr, MemStream))
>     return E;

Seems reasonable, then. I would like to get a second opinion though..


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