[std] hl haxe.io.BytesBuffer.__expand check overflow

[yuxiaomao]

by Nicolas

Without this, the program give access violation on expand very large buffer.

[Simn]

I can tell that it's by Nicolas because there's an error I can't make sense of. Help me out here, what's the size >> 10 doing there...

[yuxiaomao]

I believe it's for displaying the current buffer size in KBytes instead of in Bytes (>>10 = /1024). I'm totally ok if we just display it in Bytes too x)

[Simn]

But won't this just become 0 for anything < 1024?

[yuxiaomao]

Yes, but this error is only thrown if (size*3) >>> 1 overflow and becomes smaller than pos (which is smaller or equal than size).

[Simn]

Ah, I get it now. I thought the value was relative because it says "expand". In that case this is fine.